Chris Jurewicz

Chris Jurewicz
SafeMobility

BEng
I lead a research consultancy assisting transport agencies in reaching their road safety goals easier and sooner.

About

61
Publications
64,905
Reads
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240
Citations
Introduction
I provide applied research services in road engineering safety. My evaluations, technology trials and data insights measure the value of safety treatments and innovation. Broader expertise is provided in Safe System (Vision Zero) implementation, e.g. road engineering and design, speed limits, policy development support, technical guidance development and training.
Additional affiliations
July 2021 - present
SafeMobility
Position
  • Managing Director
Description
  • Chris is the head of SafeMobility. We focus on providing expert road safety support to transport departments, local governments and other consultants. Chris has extensive expertise in Safe System (Vision Zero) engineering, road safety program planning, evaluation, project development and change management. He uses the skills gained in his government and research roles to assist road safety leaders in Australia and overseas in making their roads safer.
July 2018 - July 2021
Transport Accident Commission, Victoria, Australia
Position
  • Senior Transport Safety Planner
Description
  • As the TAC client representative, I managed the investment, evaluation and Safe System embedment relationships with the Department of Transport for the $1.74bn road safety improvement program. I was accountable for achieving high levels of Safe System alignment in the proposed investment packages, their safety and economic effectiveness, and improving Safe System capability (culture change). I was responsible for providing strategic and expert technical guidance, monitoring and reporting to the
June 2006 - July 2018
ARRB (Australian Road Research Board)
Position
  • Principal Investigator
Description
  • I managed a portion of ARRB road safety research program, working with governments and industry towards implementation of the Safe System. I created and developed new research opportunities in fields of safety analytics, technology trials and autonomous vehicles, IoT data and in training. I was responsible for motivating teams of professional staff, and creation of multidisciplinary national project teams. I developed and led an innovation management program.

Publications

Publications (61)
Conference Paper
Full-text available
Safe System infrastructure development progressed significantly during the past five years. Most of this development has been delivered through practitioner-led innovation. This abstract describes progress on several Safe System infrastructure innovations undertaken by Safer Roads program funded by Transport Accident Commission (TAC). These innovat...
Chapter
To overcome limitations of crash-based analyses of road safety, researchers are looking for surrogate measures of safety. Floating car data (FCD, or probe vehicle data) provides opportunities to extract such measures. The goal of this review is to identify challenges and opportunities regarding using FCD to develop surrogate measures of safety. Spe...
Presentation
Full-text available
This is my paper presentation at the 2019 Australasian Road Safety Conference, Adelaide. It showcases applicability of machine learning in severe injury prediction for rural intersections in Victoria. The technique met applicability criteria. It could be used to prioritise future road safety investments, estimate their benefits, and eventually auto...
Technical Report
Full-text available
Rollover crashes are an undesirable outcome in a substantial proportion of casualty crashes on high-speed roads. Rollovers are especially over-represented in run-off-road crashes due to their direct interaction with the roadside geometry. This research project sought to identify and quantify road and roadside design factors associated with rollov...
Presentation
Full-text available
The presentation collates road safety use cases for probe (floating car) speed data from 2015-17 based on past projects. Many of these were pilot level demonstrations, and more in-depth evaluation of this data source was in progress in 2021 in Victoria.
Article
Full-text available
Driving speed is an important risk factor, especially when negotiating horizontal curves. Therefore it may be useful in extracting surrogate measures to proactively safety assessment, a practice consistent with a current shift towards a Safe System approach to addressing road trauma. Review of previous literature indicated two categories of studies...
Presentation
Full-text available
Progression towards Safe System goals of zero death and serious injury has stalled in Australia. Historical downward step-changes in road toll were associated with systemic and cultural shifts driven by government regulation (e.g. drink driving, seat belts). The goals of the current Australian National Road Safety Strategy (NRSS) are not likely to...
Conference Paper
This paper examines the road side design features related with run-off-road collisions on rural undivided roads in Victoria, Australia. Run-off-road casualty crashes comprise more than fifty percent of all single vehicle crashes that take place in rural roads with a speed limit 80km/h or above in Victoria. Five-year crash and road design inventory...
Presentation
Full-text available
This paper explores application of Machine Learning (ML) methods in road safety analysis. Association Rules, Random Decision Forest, and Deep Neural Network models were developed to predict probability of severe outcomes in run-off-road casualty crashes on rural roads. The results from the last two models were compared with results of a conventiona...
Presentation
Full-text available
This is a summarized output from Stage 1 of an innovation project carried out in 2017. It sought to develop new rural intersection design concepts highly aligned with Safe System (minimize death and serious injury). The objective was that these concepts would be low-cost so that they could be applied as a mass-action program across the rural road n...
Technical Report
This report details the preliminary evaluation of VicRoads’ Side Traffic Activated Rural Speeds (STARS) project. The project involved installing variable speed limit (VSL) signs at rural intersections to reduce the speed limit on the main road by 30 km/h when triggered by minor road traffic. Three intersections were chosen for the installation of...
Article
Full-text available
Purpose: Over the past 10 years, building on road infrastructure data, crash prediction models (CPMs) have become fundamental scientific tools for road safety management. However, there is a gap between state-of-the-art and state-of-the-practice, with the practical application lagging behind scientific progress. This motivated a review of internati...
Conference Paper
Full-text available
Traffic speed is one of the most important factors influencing road-based mobility and safety outcomes. Collection of accurate speeds at chosen points in the road network has been costly and limited in scope. Increasing proliferation of connected vehicles generates new types of data sampled from mobile and navigation devices, and from onboard syste...
Book
Full-text available
This report provides a compendium of knowledge on Safe System treatments and identifies real world experience in the practical application of solutions that can mitigate crash severity.
Technical Report
Full-text available
Intersection crashes account for approximately 30% of severe injuries in Australia and New Zealand. This study sought to improve understanding of the key factors in intersection severe injury crashes, and to develop initiatives to improve the design of intersections for better alignment with the Safe System objective of minimising death and serious...
Poster
Full-text available
Implementation of Safe System in Australia and New Zealand demands many changes in the way road infrastructure is designed and delivered. While there have been many innovative road safety treatments successfully trialled and evaluated, their introduction into mainstream road planning and design has been very slow. This paper draws on innovation man...
Conference Paper
Full-text available
This paper presents results of safety evaluation of fully-controlled right turn (FCRT) phasing at signalised intersections in Melbourne, Australia. Full-time and part-time (off-peak only) applications of the treatment were evaluated. The evaluation produced full-time FCRT crash reduction factor (CRF) of 52% for all-casualty crashes and 69% for seve...
Conference Paper
Full-text available
Traffic speeds are one of the most important factors influencing road safety outcomes. Arrival of 'big data' and powerful analytical methods opened a new avenue for obtaining and applying traffic speed data for road safety purposes. This paper briefly explores conventional speed data sources and the comparatively new floating car data (FCD) as a so...
Conference Paper
Full-text available
Implementation of Safe System in Australia and New Zealand demands many changes in the way road infrastructure is designed and delivered. While there have been many innovative road safety treatments successfully trialled and evaluated, their introduction into mainstream road planning and design has been very slow. This paper draws on innovation man...
Conference Paper
Full-text available
Over the past ten years, crash prediction models (CPMs) have become the fundamental scientific tools of road safety management. However, there is a gap between state-of-the-art and state-of-the-practice, with the practical applications lagging behind scientific progress. This motivated the review of international experience with CPMs from the pract...
Conference Paper
Full-text available
In order to overcome biases of crash-based safety analyses, research is looking for surrogate safety measures. A candidate are speeds derived from floating car data (FCD, or probe vehicle data). The goal of the review is to identify challenges and opportunities regarding using FCD speeds to develop surrogate safety measures. Specific points focused...
Poster
Full-text available
The development of modern tools for road infrastructure safety management will help to reduce the number of fatalities and serious injuries as one of the main objectives adopted in the National Road Safety Programme 2014-2020 and the Road Safety Programme 2011-2020 in the EU. Risk Management in Highway Engineering can be applied in developing tools...
Presentation
Full-text available
The intent was to provide a high-level pathway for innovation which can be adapted for more specific purposes in different areas of engineering. The pathway applies equally to innovation in engineering processes, products and in design. This presentation is a living document which will be updated as we learn more and gain experience. The main sourc...
Technical Report
Full-text available
This report provides a compendium of recent and robust evidence on the relationships between twenty key geometric design criteria and safety outcomes. The project critically reviewed quality research sources to identify crash modification factors (CMFs) for such road design criteria as horizontal curvature, lane and sealed shoulder widths, sag and...
Article
Full-text available
This paper describes a number of road infrastructure safety treatments applied internationally, evaluated and shown to be highly effective in reducing road trauma. However, their application within Australia and New Zealand has been limited to date. Based on several projects conducted on behalf of Austroads and for individual road agencies, this pa...
Article
Full-text available
The Safe System vision (known as Vision Zero, or Sustainable Safety in Europe) aspires to minimise death and serious injury as an outcome of road travel for all road users. The road engineering contribution to this vision focusses on impact elimination, or where this is not possible, on limiting kinetic energy passed to a road user in case of an im...
Article
Full-text available
Australia experiences many similar strategic road safety challenges as most European countries. These include the objective to strongly reduce fatalities and serious injuries, budgetary constraint requiring prioritisation of road investment, and the growing need for improved integration of road transport to drive efficiency. The current National Ro...
Conference Paper
Full-text available
Pedestrian injury and mortality are a global issue, with more than 270,000 pedestrians killed worldwide each year. In Victoria, 249 road fatalities were reported in 2014, 18% of which were pedestrians. These statistics convinced the Victorian road safety partners to develop a major program to reduce the number of severe pedestrian casualties. One o...
Conference Paper
Full-text available
Conventional at-grade intersection designs present a significant challenge in the context of meeting the Safe System vision of preventing fatal and serious injuries. The combination of multiple conflict points and physical characteristics of some of these conflicts lead to high probability of sustaining fatal and serious injuries in at-grade inters...
Technical Report
Full-text available
The research reports on analysis of key risk factors in pedestrian severe casualty crashes in Victoria, Australia. It then provides an extensive literature review of common engineering treatments to address these risks. Four of these were prioritised for evaluation based on their potential to address the risk factors and existing knowledge gaps. Th...
Article
Full-text available
The following extended abstract summarises author's interim research findings presented at the meeting hosted by the International Research Subcommittee of the TRB Roadside Safety Design Committee AFB(20)2 in Melbourne, Australia, on March 26, 2015. The review of safety evaluation literature showed that application of continuous wire rope barriers...
Conference Paper
Full-text available
Australia adopted the Safe System approach more than a decade ago. The first action item from the Australian National Road Safety Strategy is to ensure that all new road projects consider Safe System principles. Although the main objectives of this approach are clear, there is limited direct guidance on how this can be implemented, especially in th...
Article
Full-text available
ARRB Group was commissioned to develop and deliver two 10 day certificated courses specifically developed to increase in-country road safety engineering capacity in Nepal. The courses were delivered in May and June, 2016. Of particular interest was the Train the Trainer (ToT) model adopted to enable the delegates to become Nepal's future road safet...
Conference Paper
Full-text available
The Safe System vision (known as Vision Zero, or Sustainable Safety in Europe) aspires to minimise death and serious injury as an outcome of road travel for all road users. The road engineering contribution to this vision focusses on impact elimination, or where this is not possible, on limiting kinetic energy passed to a road user in case of an im...
Research
Full-text available
Safe System vision is the Australian and New Zealand approach to road safety which is in line with Vision Zero (Sweden) and Sustainable Safety (the Netherlands).
Presentation
Full-text available
A short presentation of the Australian National Risk Assessment Model (ANRAM), a crash risk assessment tool for network and route assessment which produces estimates of severe crashes, and assists in road safety planning. This tool is currently being used in most Australian states. Similar presentation has been presented at the 2014 ARRB conference...
Technical Report
Full-text available
This report summarises the findings of a three-year study which reviewed the safety performance of selected road infrastructure elements and provided solutions that were more closely aligned with the Safe System ideal. The review examined the performance of signalised intersections, roundabouts and wire rope barriers. The solutions were developed f...
Technical Report
Full-text available
This report draws on literature and crash data analysis to identify and quantify geometric road design elements which contribute to casualty crash occurrence and severity on rural roads, e.g. lack of sealed shoulders, steep downhill grades combined with curves, roadsides with narrow offset to roadside hazards, and high-flow rural at-grade intersect...
Technical Report
Full-text available
The Safe System concept has the objective of eliminating deaths and serious injuries, with the guiding principle that everyone, including planners, share responsibility for creating a safe road system. Good planning and design sets the foundation for a safe road environment. This report aims to promote consideration of Safe System principles in pla...
Conference Paper
Full-text available
Speed is recognised as a key contributor to crash likelihood and severity, and to road safety performance in general. Its fundamental role has been recognised by making Safe Speeds one of the four pillars of the Safe System. In this context, impact speeds above which humans are likely to sustain fatal injuries have been accepted as a reference in m...
Conference Paper
Full-text available
Selection of driving speeds which are safe for a given road environment is recognised as an integral tool in reducing road trauma. Safer speeds are one of the four pillars of the Safe System vision, and hence, a significant focus of speed zoning policies in Australia and New Zealand. In support of this, Austroads funded development of model nationa...
Technical Report
Full-text available
This report incorporates recent research, best practice examples, and jurisdictional inputs to propose a set of model national speed limit guidelines for setting speed limits at high-risk locations. The model guidelines represent a harm reduction approach to speed limits, an intermediate step towards the Safe System. The model guidelines are intend...
Technical Report
Full-text available
This report presents road safety engineering practitioners in Australia and New Zealand with updated advice on roadside hazard management, treatment selection and barrier placement in Safe System context. Roadside hazards pose a major risk to the occupants of vehicles which run off the road. This project investigated the effectiveness of safety bar...
Conference Paper
Full-text available
Rural road curves provide one the most challenging features to be negotiated by drivers on high speed rural roads. As a result, many drivers make errors resulting in runoff road and head-on casualty crashes. It has been estimated that such curve crashes on curves account for 18% of all serious casualty crashes on rural roads in Victoria. In order t...
Conference Paper
Full-text available
Crash risk assessment has developed gradually over the past 15 years to assist road agencies in identifying and treating road sections with high potential for future crashes. This paper presents the latest step on this journey: Australian National Risk Assessment Model (ANRAM) funded by Austroads and completed by ARRB Group in 2013. This paper prov...
Conference Paper
Full-text available
Vehicle Activated Signs (VAS) aim to improve safety by warning drivers to exercise caution and/or reduce their travel speeds at particular locations. This study examined the effect of VAS on the speeds of drivers approaching selected rural intersections in southwestern Victoria. Six VAS were installed on rural undivided arterial approaches to T-int...
Conference Paper
Full-text available
On average, 560 fatal runoff road crashes occur annually in Australia and 135 in New Zealand. In addition, there are more than 14,000 runoff road crashes causing injuries each year across both countries. In rural areas, runoff road casualty crashes constitute 50-60% of all casualty crashes. Their severity is particularly high with more than half of...
Article
Full-text available
The findings presented in this paper are based on Austroads-funded investigations of in-service effectiveness of safety barriers on high-speed roads (100 and 110 km/h speed limits). Based on past evaluations, the most promising was continuous application of flexible barriers on freeways addressing up to 86% of run-off-road and cross-median casualty...
Technical Report
Full-text available
Background In 2008, VicRoads treated over 1,400 km of rural undivided arterial ‘A’ roads with audio-tactile centrelines as part of the Safer Road Infrastructure Program (SRIP). Audio-tactile centrelines are painted centrelines that include small raised ridges running perpendicular to the lane. When a vehicle’s wheels travel over the ridges they cre...
Conference Paper
Full-text available
Current guidelines on clear zone selection and roadside hazard management adopt the US approach based on the likelihood of roadside encroachment by drivers. This approach is based on the available research conducted in the 1960s and 70s. Over time, questions have been raised regarding the robustness and applicability of this research in Australasia...
Article
Full-text available
The Safe System approach has now been adopted by each jurisdiction within Australia, and is likely to be at the core of the new national road safety strategy. Based primarily on the Swedish ‘Vision Zero’, and the Dutch ‘Sustainable Safety’ approaches, the Safe System approach recognises that humans as road users are fallible and will make mistakes....
Article
Full-text available
Currently in Australia, there are no decision support tools for traffic and transport engineers to assess the crash risk potential of proposed road projects at design level. A selection of equivalent tools already exists for traffic performance assessment, e.g. aaSIDRA or VISSIM. The Urban Crash Risk Assessment Tool (UCRAT) was developed for VicRoa...
Article
Full-text available
This paper explores the effectiveness of key Local Area Traffic Management (LATM) treatment types in reducing traffic speeds and, hence, in reducing the risk of casualty crashes on local roads. Local road roundabouts, one-lane slow points and vertical displacement treatments were shown bhe literature review to be the most effective in reducing spee...
Conference Paper
Full-text available
The focus on road transport safety is often drowned out during the land use planning process by other competing concerns. It is left to the road authorities to manage road safety problems arising post-implementation through re-engineering works such as black spot interventions – after the casualties occur. This paper presents Austroads Strategic To...
Conference Paper
Full-text available
This paper presents an approach to setting speed limits based on harm minimisation. The paper is based on the outcomes of a recent Austroads project conducted by ARRB reviewing the principles for setting speed limits in the context of Safe System, beyond the horizon of current guidelines. The project examined the relationships between road infrastr...
Technical Report
Full-text available
The purpose of this project was to establish the effectiveness of key Local Area Traffic Management (LATM, or traffic calming) treatment types in reducing traffic speeds and in reducing the risk of crashes on local roads. Review of the recently published LATM literature found a number of indicative speed reduction factors and some indicative crash...
Article
Full-text available
The Safe System approach has recently been adopted by all Australian jurisdictions as the guiding principle for delivering road safety outcomes. A national roundtable discussion was held to explore the implications of Safe System for the provision and management of road infrastructure. Developments at the national level and overseas were outlined....

Questions

Questions (16)
Question
Hi,
Are there proven and emerging technologies for obtaining road network level:
a) motorcyclist traffic volumes (counts)
b) their speeds,
c) motorcycle classification (from light moped to heavy touring bike)?
We have automatic tube counters which can satisfy the first two needs. These are expensive and cumbersome to use on road network scale. Digital video combined with computer vision is emerging quickly and would meet all three needs. The cost is prohibitive.
What other sources and technologies could do a good job and be cost-effective? What is used in your jurisdiction?
Question
Hi, we are looking for data sources for a transport hackathon in late April in Brisbane. One of the considered themes / challenges is based around cycling activity levels and safety.
I am looking for a source of GIS cycling activity data which is also accessible for free or small fee. If it was for Brisbane, so much better!
I am wondering if there is some probe-based (e.g. app) system for general cyclist activity.
I am aware that state and local government collect limited cycling counts each year, but only at specific locations. Fitness-based apps such as Strava have been labelled by others as biased towards certain types of cyclists.
We are interested in the broadest coverage possible. Your hints will be most appreciated.
Question
My colleagues and I are exploring to what extend Safe System / Vision Zero objective of minimising death and serious injury can be supported by modal shift.
For example, do you know of reputable studies correlating change in severe injuries with change in percentages of trips (or VKT) taken by public transport, bicycle, motorcycle or walking? What about user-specific outcomes, such as changes in pedestrian or cyclist safety with changes in proportion of travel? (...please no research on health benefits of cycling, well covered)
Australian Road Research Board have carried out past studies reviewing the subject and providing some high-level modelling. I am interested in some more in-depth studies providing newer and more robust relationships. Any trusted references will be greatly appreciated.
Question
Dzien dobry
I've met with Marcin Budzynski during his trip to Perth this month and we discussed your tests. My colleagues at ARRB and in Australasian road agencies approving barrier design systems would love to see more of your research. Especially, we often have questions relating to innovative barrier applications and any potential consequences.
Na razie
Chris 'Krzysiek' Jurewicz
Question
Hi folks, 
I am looking for recommendations on some literature related to this topic. A library search resulted in only several primary research sources. There is a fair bit of guidance on roadside design, e.g. maximum derivable slope, drain depths, embankment heights, etc. Where does the research for this come from? How old it is? Has anyone quantified the rollover risk levels in presence of different road design elements. 

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Projects

Projects (4)
Archived project
The objectives to be achieved by this project are to: - Gain a better understanding of the Safe System performance of existing intersection forms and the specific movements under various conditions and in different road environments. - Develop initiatives to address the failings of existing intersections and draft alternative intersection designs that better align with the Safe System objectives of zero death and serious injury - Improve the understanding of road system designers through multidisciplinary engagement and consultation - Inform future updates of the Austroads road design guides.
Archived project
The project seeks to establish feasibility of using Floating Car Data (FCD, a.k.a. probe vehicle data) in determining traffic speed distributions reliable enough to: 1. Monitor trends in speeds across the network to assist in managing the State Road Safety Strategy. 2. Provide input into speed management programs such as speed limit setting. 3. Evaluate the effectiveness of broad programs and local deployments of speed management programs and speed enforcement. These objectives require high level of spatial and temporal data resolution (i.e. anywhere on the network, every hour). Importantly, the speed distribution indicators (e.g. mean, 85th percentile) need to be verified against 'ground truth', i.e. speed distributions accurately measured with conventional methods such as tube counters and pavement loops. Limited research suggests that FCD link speeds are consistently lower than spot speeds measured with conventional methods. Understanding of these differences and possible calibrations will be explored. Issues such as use of free flow speeds vs. all-traffic speeds in road safety also will need to considered and quantified.