Journal ArticleDOI
Analysis of the effects of connected-automated vehicle technologies on travel demand
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In this article, the authors analyzed the potential effects of CAV technologies from a systems perspective, focusing on gains and losses to an individual vehicle, at a single intersegment.Abstract:
Connected–automated vehicle (CAV) technologies are likely to have significant effects not only on how vehicles operate in the transportation system, but also on how individuals behave and use their vehicles. While many CAV technologies—such as connected adaptive cruise control and ecosignals—have the potential to increase network throughput and efficiency, many of these same technologies have a secondary effect of reducing driver burden, which can drive changes in travel behavior. Such changes in travel behavior—in effect, lowering the cost of driving—have the potential to increase greatly the utilization of the transportation system with concurrent negative externalities, such as congestion, energy use, and emissions, working against the positive effects on the transportation system resulting from increased capacity. To date, few studies have analyzed the potential effects on CAV technologies from a systems perspective; studies often focus on gains and losses to an individual vehicle, at a single interse...read more
Citations
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Impacts of automated vehicles on travel behaviour and land use: an international review of modelling studies
TL;DR: A comprehensive review of modelling studies investigating the impacts of AVs on travel behaviour and land use shows that AVs are mostly found to increase vehicle miles travelled and reduce public transport and slow modes share.
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A Review on Energy, Environmental, and Sustainability Implications of Connected and Automated Vehicles
TL;DR: This work examines the interactions between CAV technology and the environment at four levels of increasing complexity: vehicle, transportation system, urban system, and society and finds that environmental impacts come from CAV-facilitated transformations at all four levels, rather than fromCAV technology directly.
Effects of Autonomous Vehicle Ownership on Trip, Mode, and Route Choice
TL;DR: In this paper, a multiclass, four-step model that includes AV repositioning to avoid parking fees and increases in link capacity as a function of the proportion of AVs on the link is presented.
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Discussing the “positive utilities” of autonomous vehicles: will travellers really use their time productively?
TL;DR: Autonomous vehicles (AVs) are expected to reshape travel behavior and demand in part by enabling productive uses of travel time, a primary component of the positive utility of travel concept as mentioned in this paper.
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Shared autonomous vehicle simulation and service design
TL;DR: Evaluated SAV fleets and vehicle capacities serving travelers across the Rouen Normandie metropolitan area in France suggest that the performance of SAV is strongly correlated with the fleet size and the strategy of individual or shared rides, and enabling vehicle-rebalancing strategies may have an important effect on both user and service-related metrics.
References
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Preparing a Nation for Autonomous Vehicles: Opportunities, Barriers and Policy Recommendations
TL;DR: In this paper, the authors proposed a nationally recognized licensing framework for AVs, determining appropriate standards for liability, security, and data privacy for personal travel in the United States, which is based on the work of the authors of this paper.
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A simplified theory of kinematic waves in highway traffic, part I: General theory
TL;DR: In this paper, it is shown how a formal solution for A ( x, t ) can be evaluated directly from boundary or initial conditions without evaluation at intermediate times and positions, and the correct solution, which is the lower envelope of all such formal solutions, will automatically have discontinuities in slope describing the passage of a shock.
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Impacts of cooperative adaptive cruise control on freeway traffic flow
TL;DR: In this paper, the authors used microscopic simulation to estimate the effect on highway capacity of varying market penetrations of vehicles with adaptive cruise control (ACC) and cooperative adaptive cruise Control (CACC).
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Help or hindrance? The travel, energy and carbon impacts of highly automated vehicles
TL;DR: In this article, the authors identify specific mechanisms through which automation may affect travel and energy demand and resulting GHG emissions and bring them together using a coherent energy decomposition framework, and explore the net effects of automation on emissions through several illustrative scenarios.
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An evaluation tool for advanced traffic information and management systems in urban networks
TL;DR: An evaluation model that incorporates the driver response to information, the traffic flow behavior, and the resulting changes in the characteristics of network paths, into an integrated simulation framework is presented.