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Transport planners, urban planners
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The sketch planning approach is a preliminary method used in transportation planning to quickly evaluate the potential impacts of various transportation strategies or scenarios. Here's how you can utilize the sketch planning approach for transport planning:
1. Define Objectives and Scope: Clearly outline the objectives of the transportation study and define the scope of the analysis. Determine what specific questions you are trying to answer and what aspects of transportation planning you need to focus on (e.g., congestion reduction, mode shift, accessibility improvements).
2. Data Collection: Gather relevant data needed for the analysis. This may include information on population and employment distribution, current transportation infrastructure, travel behavior patterns, land use characteristics, and socio-economic factors. Data sources may include census data, transportation surveys, traffic counts, and geographic information systems (GIS) databases.
3. Model Selection: Choose an appropriate modeling tool or software for the sketch planning analysis. Sketch planning tools range from simple spreadsheet-based models to more sophisticated travel demand modeling software. Select a tool that matches the complexity of your analysis and the level of detail required.
4. Scenario Development: Develop alternative transportation scenarios or strategies to evaluate. These could include changes to infrastructure (e.g., new roads, public transit expansions), transportation policies (e.g., pricing schemes, parking regulations), or land use patterns (e.g., mixed-use developments, transit-oriented developments).
5. Model Calibration and Validation: Calibrate the transportation model using available data to ensure that it accurately reflects current conditions and behavior. Validate the model by comparing its outputs to observed data or previous studies to ensure its reliability and accuracy.
6. Analysis and Evaluation: Run the transportation model for each scenario and analyze the results. Evaluate the impacts of each scenario on key performance measures such as travel time, congestion levels, mode share, accessibility, environmental impacts, and equity considerations. Compare the scenarios to identify the most effective strategies for achieving your objectives.
7. Sensitivity Analysis: Conduct sensitivity analysis to assess the robustness of the results to changes in key input parameters or assumptions. This helps identify the most critical factors influencing the outcomes and the level of uncertainty associated with the analysis.
8. Documentation and Reporting: Document the methodology, assumptions, and findings of the sketch planning analysis in a comprehensive report. Clearly communicate the implications of the results to stakeholders, decision-makers, and the public through presentations, memos, or other communication channels.
9. Iterative Process: Recognize that transportation planning is an iterative process, and the results of the sketch planning analysis may inform further detailed studies or refinements to the transportation strategies. Continuously monitor and evaluate the performance of the transportation system over time to ensure that it meets the evolving needs of the community.
By following these steps, you can effectively use the sketch planning approach to inform transportation planning decisions and identify promising strategies for improving the efficiency, sustainability, and accessibility of the transportation system.
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If you have a sample of Transport Vision Statement, please send me.
Thanks so much
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Dear Mr. Sagha!
I assume you refer to transport infrastructure investments - these have visions to reach:
1) Zubala, T. Effect of transport infrastructure development on selected components of the environment of inner-city river valley and the possibility of its revitalization (Lublin, Poland). Environ Sci Pollut Res (2022). https://doi.org/10.1007/s11356-022-18964-y Open access:
2) Givoni M, Perl A. Rethinking Transport Infrastructure Planning to Extend Its Value over Time. Journal of Planning Education and Research. 2020;40(1):82-91. doi:10.1177/0739456X17741196, Free access:
3) A case-study: Transport Plan to map vision for transport infrastructure to 2050, Hampshire Country Council, free access:
Yours sincerely, Bulcsu Szekely
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the traffic light sometimes is easier to cause the traffic jam problem, if the designer don't make to many change to the both side of the road,such as the house and block building, what other aspect of things can be done to mitigate the traffic jam problem.
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Dear Dr. Yang Ying ,
I suggest you to have a look at the following, interesting reference:
- Reducing Traffic Congestion and Pollution in Urban Areas
Modern, sophisticated initiatives that are better than typical ‘big ideas’ include:
  • Optimise traffic-light management
  • Use CCTV to monitor road conditions
  • Enforce existing road traffic laws
  • Improve perceptions of buses
  • Extend residents’ parking zones
  • Charge for workplace parking
  • Improve cycling infrastructure
  • Improve bus services
  • Develop and refine park-and-ride
  • Use Inbound Flow Control
  • Rationalise distribution and deliveries
  • Existing rail network
  • Light rail
  • Strategic Road Network resilience
  • Road pricing
It is often incorrectly suggested that congestion may be solved with one big idea, such as:
  • Widen roads
  • Narrow roads
  • Add bus lanes
  • Remove bus lanes
  • Build tunnels
  • Build a new ring road
  • Build a light rail network
  • Switch off traffic lights
  • Ban cycling
  • Ban cars from city centres
  • Close through-routes to private vehicles
  • Close car parks
  • Build more car parks
  • Build more park-and-rides
  • Make buses free
  • Make park-and-ride free
  • Introduce a congestion charge/road pricing
- Reducing Traffic Congestion and Pollution in Urban Areas
My best regards, Amir Beketov.
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I want to simulate one traffic intersection.
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Dear Dr. Rafal Batto ,
I suggest you these following 3 Best Free Traffic Simulation Software:
1. Intersection Simulator
2. TSignals
3. Road Traffic Simulator
My best regards, Amir Beketov.
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For exaple; public transport or transport planning or vehicle countor or vehicle tracking etc.
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I think drones are promising in using DSRC, ITS-G5, RDS and similar V2X data communication in areas with poor communication opportunities on the road.
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I would be grateful if anybody could point me to published research discussing the role of public administrations in freight transport planning/policy and what data they collect and use to base their policy upon, especially if such data is from real-time systems (perhaps once summarised). Please note that my interest is for intercity freight transport particularly.
Very many thanks!
Andrea
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Prof Ken Ogden published journal papers and a book related to freight transport planning when he was working at Monash Uni.
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Dear All, within our new European project SYN+AIR related with the air transport we are executing an online survey which aims at identifing the mobility choices related to and from the airport. We are glad to invite you fill in the survey https://ec.europa.eu/eusurvey/runner/SYN_AIR_Traveller_Survey_2021 The questionnaire is available in 5 languages (English, Greek, Spanish, Italian, Serbian) and lasts approximately 10 minutes. All adults that travel or used to travel by plane (before the Covid-19 pandemics) can answer this survey. You may find information related to the project at http://syn-air.eu/
Please, feel free to share/disseminate this request. Thanks a lot for your attention and contribution. #SESAR #H2020 #SYN+AIR
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Dear Prof. Ottomanelli!
I have filled in the survey, you posted. It was a nice experience. May I kindly recommend you a B2B - platform - the registration is for free, and there are many free of charge webinars, etc. resources you might benefit from:
3) A recent webinar: Patrick Keliher, Regional FAE Manager (RTI) and Maxx Becker, Field Application Engineer (RTI) (2021). On the High Speed Data Line: Accelerating the Evolution of Rail Transportation, March18 2021, Please see further details at: https://www.brighttalk.com/webcast/18279/473029?utm_source=brighttalk-portal&utm_medium=web&utm_content=transportation%20&utm_term=search-result-2&utm_campaign=webcasts-search-results-feed
Yours sincerely, Bulcsu Szekely
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Kindly answer in the light of next 5 years or so.
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Green Transport
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Dear colleagues in different fields of transport planning. I am currently conducting a study called "An integrated study of Park and Ride (P&R) facilities for sustainable urban mobility," which involves research and evaluation of the P&R system components in a mid-sized Latin American city. I have already researched the following: Land use, location of facilities, starting points for travel generation, catchment area, P&R demand, P&R capacity, dynamic accessibility, environment, interaction between (conventional, autonomous, electric vehicles with the P&R system)
I would like to know your opinion as transport planners, which other components should be taken into consideration. Thank you in advance for your feedback.
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The park and ride facilities should be integrated with all transport modes without focusing on only switching to the public transport . Additionally, the locations of park-and -ride facilities could be optimized and relocated with the long term plan of a city. And the operational management on a park-and-ride facility , which can be reflected in a reduction in process time. All of what you mentioned should be combined in a utility function where a travelers can maximize his/her benefit (time is a cost). Value of travel time is another topic which deserves your attention!
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Different transportation, land-use, environmental, and other corresponding planners propose their work for new city urban plans in order to address the existing problems by identifying the major gaps they had. The existing land-use was following bad planning principles and it is already a failed plan. When planners integrate their proposed spatial plan to existing land use, they will have a real challenge in aligning. So, as a planner, what would be your choice to align the proposal you have with the existing land-use?
  1. Shall i follow the standard plan i have and remove the existing unplanned land-uses( NB: the compensation cost may be too large) ? or
  2. Shall i accept the existing situation as it is and compromise the planning standards?
What is your suggestion?
Any help is appreciated very much.
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From a southern perspective, I will go for option 2. Like @Luis Fernando indicated, we need to rethink our understanding of city making especially in the global south. Obviously the city is being shaped largely by the people as opposed to 'our plans' - let's plan from the peoples perspective (inclusive, participatory planning). Miraftab's piece on 'insurgent planning' will offer you a clearer insight of my point of departure. Hope this helps
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Different transportation planners use different criteria to suggest or to propose a public bus route for one city.
There are different considerable factors to be used as a reference to propose such projects such as Traffic volume, future population dynamics, decision-maker's point of view, land use characteristics and other demographic characteristics may be used as a reference to propose a public bus route system for one Metropolitan city.
And, To consider the whole things in one case, it needs special, long preliminary investigations and careful attention.
I know that there are a bunch of planning concepts from different literature, But, i need a clear image on what were the necessary and obligatory planning criteria that must be considered in proposing public bus routes for one developing countries?
Any help is appreciated. It is open for learning-teaching discussion.
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The advantahe of bus routes is the quick ability to vary routes and pickup points as ridership demand changes. Population catchment area of a route is a key evaluation criterion...that attribute can help in selecting bus stops, bus frequency, and actual routes.
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Hello all,
I am trying to model a two way undivided road in VISSIM for heterogeneous traffic in Indian context. What is the correct way to do so? Both direction traffic will be sharing same carriageway.
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Hi
if the lanes are dedicated and physically separated, it is better to implement two different parallel roads.
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An interesting and important matter in relation to the Australian society (its struggle to handle high population growth) put forth in a compelling manner. Another example highlighting the lack of systems thinking on the part of decision makers. It shouldn’t be narrowly focused everything is the economy only perspective. There is a whole system out there. High migration rate keeps the economic figures in a good shape. But infrastructure building must be on par with the population growth – better transport plans and infrastructure, more school and hospitals. Otherwise, the overall productivity of operation will continue to decline and causing major economic and other problems in the longer run.
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Development of infrastructure, better city planning, increased investment in research etc are all appreciated by the society. But, without putting a check into population growth, or mass migration into urban Central Business District (CBD) areas, all these efforts are like filling a pot with a hole in the bottom. Besides investing in infrastructure building and R&D projects, people need to be educated regarding ill effects of population explosion and strict regulations need to be enacted. Cities need to be decentralized so that population density is evenly distributed throughout the city. Only then we can expect sustainable development in our society.
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The domain of my research will focus on aviation security and transportation security officers; thus, I realize any available measurement tools may need to be adapted/customized
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Dear Don,
Although it is not directly related to social norms, we have just completed a H2020 project on cultural aspects:
IMPACT – Impact of Cultural aspects in the management of emergencies in public Transport
You may want to review the deliverables shared in the website and can find some clues in transportation, especially for screening:
Best,
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I want to establish the relationship between the accident rate m such features as gross domestic product, the auto industry, the number of inhabitants, the density of the road network, etc.
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we all have got great information. Thank you for asking such an interesting question.
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I'm looking for documents that investigate and compare costs & benefits ratio of tramway and bus services for small/medium urban cities. I'm also interested in examples of operational integration of these two PT services.
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Dear Fausto:
Here I send you some links with information regarding your question.
In the case of Barcelona you can find the advantages of our Tram system in http://www.tram.cat/en/the-tram/advantages
In this website, Public Transportation: What is the cost benefit of trams over buses? (https://www.quora.com/Public-Transportation-What-is-the-cost-benefit-of-trams-over-buses) you can find a short discussion of the topic and a lot of related links.
Here an example of Edimburg: Transport Economics: The Return of Trams - Benefits and Costs (https://www.tutor2u.net/economics/blog/transport-economics-the-return-of-trams-benefits-and-costs)
Cervero, Robert & Guerra, Erick. Urban Densities and Transit: A Multi-dimensional Perspective  (http://www.its.berkeley.edu/sites/default/files/publications/UCB/2011/VWP/UCB-ITS-VWP-2011-6.pdf)
I hope help you with the information.
Regards
Rolando
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What are the sequenced steps of urban transportation planning process? 
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Salam All,
Generally speaking, Forecast comes first then you need to think about alternatives that fit with your forecast. But the Urban transportation problem is bigger than this, and it should be taken in a comprehensive view.  all the phases should be taking together as a one process. don't forget that different Urban problems need different solution alternatives.
Regards
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The question refers to workload management from different perspectives: organisational, individual, operational demand. I'm just interesting in different viewpoints on this question
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Thanks!
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I am looking for the effect of hot climate on the behavior of transit use and public transportation ridership? and  what is the human thermal comfort in outdoor spaces in a hot arid region?
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This is not an accademic point of view. Some 20 25 years ago I studied what is now called sub saharan Africa. 
The arid region in Africa are scarcely populated. They tend to use rail if rail where it has been implemented  for goods transport (ore) and when this is possible.
The populations are poor, so most of them can't afford public transit they  mostly walk for short distances. Bicycles and scooters are the main competitors  of public transit. 
The traffic flows are very small, so some small capacity vehicules are used. for urban and interurban transport. 
hope this can help a little bit
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Dear All,
I am working on Vehicular Networks and on a problem that is concerned with the %age of public buses in metropolitan cities. 
What would be the safe assumption to make as to what is the percentage of public buses of the total vehicular density in urban scenarios? Somewhere I read that public buses would be 25 to 30% of the total vehicular density in the urban scenarios, but I cannot find the reference. 
Any resource and/or reference would be highly appreciated. 
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Dear Hussain,
In polish metropolitan area it is different, becouse they are several public transportation, e.g.: buses (one and more administrators) + tramps, buses + trains + tramps, etc.). For example, in Poznan (Poland) population number of 550 000 permanent residents + about 100 000 temporary residents (students):
- main operator of public bus system in Poznan city  - about 300 buses
- others operators (Poznan Distict) - about 100 buses
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hello ,
I want to understand how the initalisation of  algorithm in the attached file have to be ?
What the autor means by the active direction ?
How did he fill the matrix of red and green period .
Thanks for response in advance.
Best regards,
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Dear Khadija Ahmadi , Kindly go through this article:
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I am working on a research to look at the question of demand for BRT and how it is shaped by the urban environment (densities along the corridor, population characteristics, employment characteristics, etc.)
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I think BRT is significantly lower infrastructure and operating costs and greater potential network flexibility. One book you can read call Bus rapid transit: a review of recent advances by Lloyd wright on 2011. 
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I am interested in applying UNA to Colombo. But still I could not find the exact way of doing it. The available tutorials in the internet only explain the GIS steps in applying it. I am worried on preparation on the weighted attribute table. So if anyone can help me in finalising the required database for the UNA will help me a lot
Thanks
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You can create by arcgis network analys, but which one type you want to analys? Because every type need different variables.. 
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I am interested to learn and "play" with a group of students a "serious games" related to urban and transport planning. It would be very useful therefore to know some available examples and already usable to didactic purpose.
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i wanna do research about mesoscopic traffic flow parameters which affect crash severity in urban highway. i know that mesoscopic parameters are combination of macroscopic & microscopic parameters. but what kinds of variable should i consider for making a crash severity models
thanks for your time and consideration
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Crash Severity on a urban highway, as on other roads, mainly depends on the kinetic energy. The kinetic energy by the speed. The speed by traffic flow, density, lane width, tortuosity of the route etc.
I would check the following parameters in function of the crash  severity:
number and width of lanes, traffic flows per lane (in passenger car equivalents per hour), composition of traffic flow, speed (85th percentile or speed diagrams for the entire path), speed differences among different types of vehicles (such as cars, vans, trucks etc).
The interdependence of these parameters and the crash severity should give you some good results.
Good work and good luck
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The planners design a tramway for a road with around 4000 passengers/hr per each direction in peak hours . Just I want to examine the possibility of implementation of BRT mode instead of Tramway.  
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The short answer is yes and by a large margin. Capacities up to 35000 passenger per hour and direction and even more have been OBSERVED in Transmilenio BRT. See the BRT Planning Guide: https://www.itdp.org/wp-content/uploads/2014/07/52.-Bus-Rapid-Transit-Guide-PartIntro-2007-09.pdf
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I have simulated a signalized intersection in VISSIM. For the left turning vehicles, I have provided an exclusive short lane of length of 50 meters at the intersection. The green time of the main lane(for vehicles travelling straight) is 30 seconds out of 70 seconds cycle time. The left turning lane gets an additional 5 seconds of green time above this. Can some please explain how can I calculate the capacity of the left turning lane? 
Best Regards
Umair Hamid Keen
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If there is no interference from adjacent through and right-turning vehicles, the capacity of a short turn pocket is equal to the capacity of an exclusive left-turn lane, and can be determined easily by analytical methods (e.g., from the Highway Capacity Manual, or c=s*g/C). However if interference (e.g., demand starvation) does exist, the capacity can only be determined through simulation experiments. You would need to slowly increase left-turn demand until left-turn throughput no longer increases. That point would be the effective capacity of the left-turn pocket.
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A fuzzy in the PROMETHEE
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Dear Haris,
thank you for reply. At the moment I am out of this work and need sometime to get in again. But if it is no problem I will contact you latter?
Regards
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transportation planning experts
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Hello!
I can say that if your dependent variable (i.e. telecommuting propensity) is ordinal you could use ordered models such as ordered logit models.
I can suggest you this really useful book: Greene and Hensher, Modeling Ordered Choices, Cambridge University Press.
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How can the architectural profession provide an environment for increased informal neighbour interactions, especially in high-density developments?
Where and how do you usually make contact with your neighbours? 
Are you aware of any great publications or building case studies related to this area of research?
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Dear Amelia,
These material are interesting:
And this book:
The Handbook of Design for Sustainability
by Stuart Walker,Jacques Giard - 2013
Regards,
Vanessa
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Recently, several studies on calibrating traffic flow models have been undertaken using support vector regression (SVR). For me, the method seems to be a bit counter-intuitive. Rather than the sum of the squared errors, the sum of squared prefactors of the model function is minimized. However, this seems to have nothing to do with the fit quality itself. The fit quality enters only indirectly in form of some constraints, and small deviations are not penalized at all. Furthermore, you obtain a sort of black-box model which is lengthy to write down explicitly and which cannot be understood intuitively. Under which circumstances, the SVR should nevertheless be preferred to an ordinary LSE minimization?
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Hi Martin, thank you for the nice clarification.  I now have a better appreciation for your question.  Here's my take: consider the following estimation problem: Let x_i denote the a sample of exogenous variables and let w denote the vector of prefactors of x.  For simplicity, let's say f(x_i) = w.x_i + w_0, that is, we are fitting a linear function and where w_0 is an intercept.  A general estimation problem is given by 
minimize [ \sum_i L( x_i, f(x_i) ) ] + \lambda ||w||_2,
where L(,) is a "loss"/distance function, \lambda is a constant weight (Lagrangian multiplier) and ||.||_2 is the l_2 norm.
The second term "\lambda ||w||_2" is interpreted as a rugularizer, which is usually included to mitigate the possibility of over-fitting and to promote a unique solution to the estimation problem.
For LSE minimization, one chooses an l_2 distance for the loss function, "L(,)".  For SVM regression, one chooses an l_1 distance function (the absolute value).  The difference between these two loss functions is that the l_1 distance function promotes solutions which are sparse, i.e., solution vectors with many zero entries.  In the context of SVMs, this translates to only a small number of points in the dataset dictating the form of the fitted function f(); namely, those which lie on the boundary of the margin.
So, I guess your question boils down to: when is sparsity a preferred property?  In general, I think the answer depends on context.  Sparsity has its advantages when dealing with very large datasets and one is interested in understanding which small subset of the samples is most representative of the entire set.  It is also a key attribute for compression. 
I hope this provides some clues towards an answer to your question.  This is indeed a very interesting question.
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Hello,
Do you know any cases of congestion charging/pricing schemes in the global South? I have heard that New Delhi has been considering implementing one, and so has Beijing... but apart from several European cities and Singapore (where the idea came from, apparently), are there any other municipalities in Africa, Asia or South America that have played with this idea?
Thanks for your help!
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Dear  Wojciech,
About Brazil:
Traffic Management Schemes – the London Congestion Charge and the São Paulo
‘Rodízio’ Programme’  by Paulo Câmara and Laura Valente de Macedo
Urban Congestion Charging: Theory, Practice and Environmental Consequences by Georgina Santos and David Newbery
Regards,
Vanessa
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Hi,
I looking for cities/towns located in the global South (South America, Africa, ... but the list could include also China and India!) which have experimented (or at least considered) the introduction of free (= zero-fare) public transport.
Your help is much appreciated!
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Thanks! After having done some research, I am still looking for more cases in South America and Asia (not only in China). Let me know if you have heard of any that aren't mentioned here: http://farefreepublictransport.com
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I know this is a long shot and it's something difficult to research let alone find on the internet, but if you have any references about this subject I'd be grateful. It's more from a standpoint of traffic psychology. Example:
There are 2 routes and both have similar features as well as distance to the final destination. One of the routes is more important and thus is used heavily by buses. If drivers knew that fact, at what percentage or would they at all (but it has to be proven) choose the other route?
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Many aspects of discrete choice are made more difficult when there are correlations between the choices / attributes of the options (often results in probit rather than more elementary logit formulation). Thus, for example the presence of more buses may lower traffic count, but the stop / start pattern of transit could make the free flow travel time only an approximate measure of the link performance.
I recommend "Route Choice: Wayfinding in Transport Networks" by P.H.L. Bovy and E Stern published by Kluwer in 1990. The section called "elements" around p 100 is very good on the issue you raise. I'd say that the bottom line would that congestion (no matter what form it takes) is going to provoke modification of routes, and that the resulting equilibrium traffic assignment follows fundamental traffic engineering principles (user equilibrium). Whether you can get some additional quality into the behavioral predictions by altering the mix of vehicle types is probably going to take some further digging.
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My idea is to develop a 2-dimensional simulation for a real time traffic camera input. I need to create agent objects for each vehicles and pedestrians in real time video captured via camera. I want to recognize the objects with the help of object identification techniques too. Finally my simulator should represent all recognized objects in the video.
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Why do not you show the graph and explain better your needs?
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Could you recommend any reports, books etc. about the influence of automatic incident detection or incident management on the traffic safety? especially road infrastructure...
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Hi, Maybe this report can be useful for you.
Road Safety Impact of New Technologies, by OCDE
Here there are others...
(2013) The evolution of urban traffic control. changing policy and technology
(2009) Beyond ‘‘best practice” road safety thinking and systems management
Kind regards
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India has a huge domain of public transports most of which is decentralized and ill-organized.
Proposed Ubiquitous Transport System would provide a single-window approach to transport facilities where it will be easier for people to avail transport services.
How far is its implementation feasible in the huge and diversified domain of India?
Or is it a good idea bringing all the transport facilities under a single portal?
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Hello Mayra,
You have rightly pointed out to one of the key issues in implementation. As in the case of my home country India, GPS tracking in vehicles though already implemented is restricted to a specific domain and scale. I strongly think that devising an intelligent transport management systems with single window approach to track-record of all public transports could be the next step in this quest.
Best Regards....
PARAG
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I would like to know aboutthis area regards research about accessibility and mobility of transportation for people with disability by their daily, weakly, monthly and anualy activity for different trip purpose by different modes, which factor make most of influence of their behaviour in trip demands and is it possible to measure the costs of their trips and do they have influence on making their trips in realtions to subsidies and discounts. Also I want to know more about whether it is possible to measure sustainable transportation for people with disability.
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I can suggest you an interesting document made by the Spanish Social Services Ministry. It has chapter focused on accesibility and transport. The only problem is that is in Spanish...
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I am interested in examining the traffic safety situation of some cities/ towns in my country. Does anyone have expertise in this field by way of research?Is there any model I should know about? What should I consider in terms of variables?
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Dear Enoch,
I quite agree with Satish Chandra.
The study of traffic safety, urban (or not) starts from the data. These can be at different levels of depth depending on the results you want to achieve: general strategy, action planning, design of the countermeasures. From the statistical data down to single police reports.
You try to give a quick read to ANALYSIS OF ROAD SAFETY: THREE LEVELS OF INVESTIGATION that I have made available now.
Then you let know me.
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Regulations related to people with disabilities and transport
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In Malaysia we've Persons with Disabilities Act 2008 as main legislation covering PWD including transport. 
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In downtown and heavy commercial areas, pedestrians use streets and interact/conflict with vehicles. Therefore, causing congestion that is caused by heavy traffic as well as pedestrian conflict. When analyzing/simulating (vehicular) traffic operation using the regular tools (HCM and others) and adding some friction factors to account for pedestrian conflict, results are not reasonable compared to real life conditions.
Does anybody know of a model or a methodology to analyze or simulate the pedestrian-vehicular traffic conditions?
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good evening
what type of micro simulator do you have?
VIssim for example has PTV Viswalk t0 define pedestrian flow
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my research starts from many real time data relating to traffic and congestion phenomenon on road network.
i need of specific mathematical approach that define variation of  pollution emission through traffic data and enviromental aspect
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thanks a lot
i just download the second file. My problem is not related to Gis  but real time data of traffic  that it is just use like congestion phenomenon map (on real time)
i want to compare different mathematical  approach (linear and not) and COPERT too to define a scale related to pollution to output on map.
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The BPR function is the most used in static models but is seems not suitable for dynamic models.
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The bottleneck model may be a good approach for dynamic modeling. It assumes a fixed capacity to the bottleneck, with all demand exceeding capacity forced to wait before the bottleneck.
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In developing countries, demand aspects of public transit have received very limited attention as compared to the design and engineering aspects. Further, transport studies conducted in those countries are suffering from virtual lack of a database on urban transport statistics or project based or either very aggregate.
Given circumstances, there is a need on a simplified method to measure transit demand of public transit stops. This study suggested that network centrality measures tool is robust, dynamic planning tool that will offer promise for transport planning applications in Indian context.
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I think Centrality measures can serve in one stage of the Transportation modeling process: identifying and pinpointing populations.... but in order to complete your modeling you need more data about the transportation networks, vehicles, distances, accessibility and smoothness of flows in order to have a real simulation of the transportation network.    
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Results of the analysis of regulatory and guidance documents for the organization of traffic related issues optimization speeding traffic flows, use of humps, designing roundabouts at one level, to control access to the city streets and roads, traffic signalization and pedestrian traffic flows on regulated intersections, crossings, applying the method of organizing the movement "living area", using dynamic routing of traffic flows, traffic management and pedestrian traffic flow in the area of ​​ground pedestrian crossings and stopping points passenger shuttle transport, traffic management in the area of ​​railway crossings.
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Uk highways agency have a road safety audit before construction during construction and after construction of a scheme
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I'm currently looking for any research related to improving the use of public bike sharing systems. Having a system installed in the city I'm looking for scientifically proven measures to increase the use of it. Any idea of real research on that topic?
I'm well aware of European projects like OBIS. But any suggestion is appreciated.
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Take a look at this selection of articles on cycling, from Taylor & Francis (free access until 30th June 2014). Hope you could find some useful inspirations.
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I would like to compare them with the Polish guidelines. I found the Australian guidelines (Yarra Trams) and Irish (RSC). Can anyone help?
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Dear Jacek,
you are welcome.
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I want to model of predictions of passenger flows in traffic based on the theory of uncertainty (rare events). Is there any suggestion for this?
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Of course, you're welcome in case you need some answers.
I've been in Belgrade in 2007. Restaurant Vuk: 12, Vuka Karadzica
All the best
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Research shows that centralizing a business structure in a city would lead to major congestion in public transportation system during an increase of population growth.
People are required to travel to the CBD for job opportunities hence, this leads to issues such as inefficiency of public transportation system.
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Hi there., I would like to extend the considerations put forward so far by including also freight transportation. In fact when looking at urban structure we mostly concentrate on passenger transport. In fact, mosto of congestion is created also thanks to the overlapping of consignments to cities linked to their structural needs of net importers. Dense mono centric well planned cities where a closed loop concept (physical internet) can be more appropriately be developed would, under this respect, in fact favor a reduction of congestion rather that an increase. The end result will of course depend on the net effect of the passenger and freight movements.
regards
Edoardo
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Where I can find a good explanation of the difference between stochastic and deterministic optimization of transportation network design?
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Dear Russell,
thank you.
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There's a growing body of research relating transport infrastructure (particularly transit) to land values, mostly in suburban situations. But how can we identify and quantify the potential benefits of proposed transit facilities to CBDs and the inner city?
Most transit facilities don't stack up in traditional benefit:cost analyses, but may afford great benefits in amenity, livability and the socio-economic wellbeing of our city centres. How can we evaluate those benefits and include them in the benefit:cost equation? Or, if we are stuck with some sort of MCA, what measures are available to allocate scores to such benefits in such a way that they can be weighed against implementation costs?
The same question applies also to active transport infrastructure.
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Maybe my paper can help