Mehdi Nourinejad

Mehdi Nourinejad
University of Toronto | U of T · Department of Civil Engineering

Doctor of Philosophy

About

52
Publications
23,927
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1,238
Citations

Publications

Publications (52)
Article
On-demand ride-hailing services are becoming a ubiquitous means of mobility in major cities. While convenient and accessible, they are costly for many, and thus ride-hailing providers are often offering pooling options that allow passengers to share a ride and split the fare. The downside of pooling is the extra waiting time passengers may experien...
Article
Full-text available
An urban consolidation center (UCC) is a logistics facility used to combine deliveries of multiple shippers for reducing freight traffic in dense urban areas. Despite their benefits, such as reducing less-than-truckload deliveries, former applications of UUCs have faced backlash from shippers that were forced to use them even though they did not ex...
Article
Connected automated vehicles (CAVs) use sensors to scan their surrounding environment in order to make safe and efficient motion decisions. The richness of a CAV's vision depends on the configuration of on-board sensors and the ability of CAVs to share data with nearby vehicles. High-end sensors provide quality data, allowing CAVs to rely on their...
Article
In privatized transit networks, operators compete to maximize their individual profits and governing agencies make decisions that influence the competition. We examine a duopolistic transit market with two network structures: (i) parallel: passengers have a choice between the operators, and (ii) serial: passengers are dedicated to one or more opera...
Article
Full-text available
Parking is a cumbersome part of auto travel because travelers have to search for a spot and walk from that spot to their final destination. This conventional method of parking will change with the arrival of autonomous vehicles (AV). In the near future, users of AVs get dropped off at their final destination and the occupant-free AVs search for the...
Article
Full-text available
Autonomous vehicles can profoundly change parking behaviour in the future. Instead of searching for parking, the occupants alight at their final destination and send their occupant-free cars to a parking spot. This paper studies the impact of parking in a morning commute problem with autonomous and regular vehicles. We simplify the complex problem...
Article
Full-text available
We consider a proposed system that would place sensors in a number of wastewater manholes in a community in order to detect genetic remnants of SARS-Cov-2 found in the excreted stool of infected persons. These sensors would continually monitor the manhole’s wastewater, and whenever virus remnants are detected, transmit an alert signal. In a recent...
Article
Problem definition: Autonomous vehicles (AVs) are predicted to enter the consumer market in less than a decade. There is currently no consensus on whether their presence will have a positive impact on users and society. The skeptics of automation foresee increased congestion, whereas the advocates envision smoother traffic with shorter travel times...
Article
Full-text available
About 50% of individuals infected with the novel Coronavirus (SARS-CoV-2) suffer from intestinal infection as well as respiratory infection. They shed virus in their stool. Municipal sewage systems carry the virus and its genetic remnants. These viral traces can be detected in the sewage entering a wastewater treatment plant (WTP). Such virus signa...
Article
Illegal parking adversely impacts traffic and creates unsafe conditions for other road users. We present parking enforcement policies to maximize social welfare and profit. We use the bilateral meet function to quantify the friction and characterize key factors of illegal parking behavior. The model shows that the citation probability increases wit...
Article
Transit signal priority (TSP) is a traffic control strategy that gives priority to transit vehicles by adjusting intersection signals in real time. The technology is implemented in many major cities and has proved to benefit transit routes in reducing the overall passenger travel time. Unfortunately, there are several problems with TSP that are com...
Article
About 50% of individuals infected with the novel Coronavirus (SARS-CoV-2) suffer from intestinal infection as well as respiratory infection. They shed virus in their stool. Municipal sewage systems carry the virus and its genetic remnants. These viral traces can be detected in the sewage entering a wastewater treatment plant (WTP). Such virus signa...
Article
Recent advances in artificial intelligence and wireless communication technologies have created great potential to reduce congestion in urban networks. In this research, we develop a stochastic analytical model for optimal control of communicant autonomous vehicles (CAVs) at smart intersections. We present the automated network fundamental diagram...
Article
This paper presents the Plugin Hybrid Electric Vehicle (PHEV) routing problem that finds the optimal set and sequence of customers visited by PHEVs to minimize total energy consumption. PHEVs use electricity and gasoline as their two energy sources. A power management model finds the optimal draw of power from the two sources along the vehicle’s pa...
Article
Ride-sourcing is a prominent transportation mode because of its cost-effectiveness and convenience. It provides an on-demand mobility platform that acts as a two-sided market by matching riders with drivers. The conventional models of ride-sourcing systems are equilibrium-based, discrete, and suitable for strategic decisions. This steady-state appr...
Article
Full-text available
Ride-sourcing is a prominent transport mode because of its cost-effectiveness and convenience. It provides an on-demand mobility platform that acts as a two-sided market by matching riders with drivers. The conventional models of ride-sourcing systems are based on equilibrium assumption, discrete, and suitable for strategic decisions. This steady-s...
Article
User Equilibrium (UE) has been heavily studied during the last few decades, many studies of which define equilibrium flow of traffic for uncapacitated networks based on Wardrop’s first principle, implying also a Nash Equilibrium (NE). Although, in general, the two equilibria (UE and NE) are not explicitly the same, they are shown to be equivalent u...
Chapter
Remote assessment sensors (RAS) are a new technological advancement that relay information to a central server about bin fill‐levels. This chapter proposes an approximate dynamic programing model, which takes into account RAS information on a daily basis and designs routes accordingly. This model is an approximate dynamic program where a vehicle ro...
Article
Full-text available
Parking is an important part of transportation planning because a typical vehicle spends 95% of its lifetime sitting in a parking spot. The increasing need to store vehicles has transformed a lot of valuable real-estate into parking garages in many countries. Realizing the high social cost of parking provision, Autonomous Vehicle (AV) industry lead...
Article
Autonomous vehicles can profoundly change parking behavior in the future. Instead of searching for parking, autonomous vehicle owners get dropped off at their final destination and send their occupant-free cars to a parking spot. In this paper, we study the impact of parking in a bi-class morning commute problem with autonomous and regular vehicles...
Article
Full-text available
Taxis are increasingly becoming a prominent mobility mode in many major cities due to their accessibility and convenience. The growing number of taxi trips and the increasing contribution of taxis to traffic congestion are cause for concern when vacant taxis are not distributed optimally within the city and are unable to find unserved passengers ef...
Conference Paper
Full-text available
Despite the increasing relevance of private transport operators as Mobility-as-a-Service in the success of smart cities, desire for privacy in data sharing limits collaborations with public agencies. We propose an original model that circumvents this limitation, by designing a diffusion of the data—in this case, service tour data—such that passenge...
Article
Full-text available
Despite the ubiquity of transportation data, methods to infer the state parameters of a network either ignore sensitivity of route decisions, require route enumeration for parameterizing descriptive models of route selection, or require complex bilevel models of route assignment behavior. These limitations prevent modelers from fully exploiting ubi...
Article
Taxis are increasingly becoming a prominent mobility mode in many major cities due to their accessibility and convenience. The growing number of taxi trips and the increasing contribution of taxis to traffic congestion are cause for concern when vacant taxis are not distributed optimally within the city and are unable to find unserved passengers ef...
Conference Paper
Full-text available
Taxis are increasingly becoming a prominent mobility mode in many major cities due to their accessibility and convenience. The growing number of taxi trips and the increasing contribution of taxis to traffic congestion are cause for concern when vacant taxis are not distributed optimally within the city and are unable to find unserved passengers ef...
Article
Full-text available
Airport curbside congestion is a growing problem as airport passenger traffic continues to increase. Many airports accommodate the increase in passenger traffic by relying on policy and design measures to alleviate congestion and optimize operations. This paper presents a mesoscopic simulation model to assess the effectiveness of such policies. The...
Article
Full-text available
This paper presents a complementarity equilibrium model for electric vehicles (EVs). Under the equilibrium conditions, each EV takes the path that is shortest and does not violate the driving range. When the driving range has to be violated, the EVs are allowed to choose a path with a charging station to extend their driving range. To find the shor...
Article
Full-text available
A continuous approximation (CA) model is proposed for the fleet composition problem in rectangular-grid-networks. The model extends Jabali et al.’s (2012) methodology for radial- networks. In the model, delivery points are assumed to be uniformly distributed in a square- shaped service region. The region is partitioned into zones, each zone is allo...
Article
Efficient parking management strategies are vital in central business districts of mega-cities where parking supply is limited and congestion is intense. Hourly parking pricing is a common parking management strategy where vehicles pay based on their parking duration (dwell time). In this paper, we derive comparative static effects for a small netw...
Article
Parking is a cumbersome part of any trip because travelers have to search for a spot and walk from that spot to their final destination. This conventional method of parking will change with the arrival of autonomous vehicles (AV). In the near future, users of AVs get dropped off at their final destination and the occupant-free AVs search for the ne...
Conference Paper
Taxis are increasingly becoming a prominent mobility mode in many major cities due to their accessibility and convenience. The growing number of taxi trips is cause for concern when vacant taxis are not distributed optimally within the city and are unable to find waiting passengers effectively. A way of improving taxi operations is to deploy a taxi...
Article
Commercial vehicles are of particular interest in parking enforcement because of their heavy presence in central business districts and their recurrent behavior of illegal parking. To deter illegal commercial vehicle parking, enforcement policies are defined by the citation fine and level of enforcement. This paper investigates how rational carrier...
Article
Full-text available
Vehicle-to-Grid (V2G) is a technology which can reduce the cost for power distribution network operators by storing electricity in the batteries of electric-drive vehicles and retrieving it when energy demands increase during the course of a day. Participants of V2G are reimbursed for offering their vehicles which can lead to changes in trip schedu...
Article
Full-text available
As the City of Toronto implements stricter parking enforcement in its downtown core, commercial vehicles have become targets of increased ticketing and towing, often without alternate legal means of parking and loading. This paper investigates the feasibility of a commercial vehicle parking permit to provide lawful and affordable parking options, w...
Article
Distribution of humanitarian supplies is vital in saving lives during disasters. Investment in retrofitting critical transportation links reduces casualties as intact links improve flow of relief supplies. In finding critical links, link importance values are derived using the concept of network reliability. A network improvement problem is then so...
Article
Dynamic ridesharing involves a service provider that matches potential drivers and passengers with similar itineraries allowing them to travel together and share the costs. Centralized (binary integer programming) and decentralized (dynamic auction-based multi-agent) optimization algorithms are formulated to match passengers and drivers. Numerical...
Article
A solution to the imbalance of vehicles in one-way carsharing systems is vehicle relocation which involves staff members to redistribute the vehicles between stations. Vehicle relocation, however, can lead to an imbalance of staff members between stations. Thus, staff members, themselves, need to be relocated between stations to perform the vehicle...
Article
Full-text available
Carsharing organizations are shared-mobility services which allow users to share vehicles of a fleet. These services are divided into one-way and two-way systems. Two-way systems require users to return the vehicles to their original pick up stations whereas one-ways systems do not. We present a hybrid system that has features of both. Two integer...
Article
This paper proposes a dynamic optimization–simulation model as a decision support system for one-way carsharing organizations. To reduce the vehicle imbalance in one-way systems, a Vehicle Relocation Optimization model is solved successively in a discrete event simulation. Each event is the arrival of a new user. The model is compared to an a prior...
Article
Natural earthquake disasters are unprecedented incidents which take many lives as a consequence and cause major damages to lifeline infrastructures. Various agencies in a country are responsible for reducing such adverse impacts within specific budgets. These responsibilities range from before to after the incident, targeting one of the main phases...
Conference Paper
Full-text available
Urban truck parking policies include time restrictions, pricing policies, space management and enforcement. This paper develops a method for investigating the potential impact of truck parking policy in urban areas. An econometric parking choice model is developed that accounts for parking type and location. A traffic simulation module is developed...

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Projects

Projects (5)
Project
This project investigates emerging patterns in public transportation including ridesharing, carsharing, and taxi services.