Providing quality transit service to travelers is a constant challenge for transit agencies. The advent of fully-autonomous vehicles (AVs) and their inclusion in mobility service fleets may allow transit agencies to offer better service or reduce their own capital and operational costs. This study focuses on the problem of allocating...
The transportation infrastructure privatization is an essential solution to the public fund's shortage of transportation investments. In the privatization practices, the private firms build, operate, and own the transportation infrastructure under a limited term. Due to the private sector's involvement, the efficiency of the transportation service is determined not only...
With connected vehicle generated (CVG) information, traffic stream parameters become straightforwardly quantifiable, enabling traffic state characterization and examination over a variety of operational conditions. Since the observation is independent of any spatial restrictions and unaffected by queue buildup and discharge, CVG data offer more comprehensive, more reliable inputs to the...
Autonomous trucks (ATs) are envisioned to potentially revolutionize the logistics sector. The integration of autonomous trucks into the overall truck fleet will impact industry regulations and ease driver-related challenges. It also has the potential to improve road safety and reduce carrier costs. There is an extensive body of literature on...
Mobile internet has brought a disruptive innovation to the ride-hail industry. The technology introduced by Uber, referred to as e-hail, matches passengers with drivers through their smart phones, while integrating transaction and feedback in a single app. In comparison to taxis hailed off street, or street-hail (s-hail hereafter), e-hail has...
A hybrid multimodal mobility system aims to deliver mobility as a service by integrating a broad range of existing and emerging public transportation services. The appeal of a hybrid system is twofold. First, it can strike a better balance between cost and level of service (accessibility, efficiency etc.). Second, it...
Automobile transportation is among the leading sources of greenhouse gas emissions in the United States, and reducing vehicle miles traveled must be part of our climate change mitigation efforts. One recent trend that, if accelerated, could aid in this effort is the increase in bicycling for transportation in large US...
The purpose of this dissertation is to investigate the adoption of active mobility through the lens of three fundamental concepts: scale, segment, and neighborhood. Scale refers to both the aggregation of geospatial data and the measurement of latent constructs through behavioral survey instruments. Segment refers to the various clustering approaches...
The term Connected Vehicle (CV) is broadly used to identify any ‘smart vehicle’ with wireless connectivity to the roadside infrastructure and other vehicles. CVs with automation capabilities are called connected automated vehicles (CAVs). With real-time communication and data transmission capability, CAVs have the potential to improve the transportation system’s traffic...
Two recent developments in the transportation industry – shared-use mobility services and fully-autonomous vehicles (AVs) – have the potential to fundamentally transform urban mobility. Shared-use mobility services (e.g. Uber, Lyft, Via, Chariot, ZipCar, and Car2go) are already beginning to bridge the gap between personal vehicles and fixed-route transit service in...