Closing the Induced Vehicle Travel Gap Between Research and Practice

  title={Closing the Induced Vehicle Travel Gap Between Research and Practice},
  author={Ronald T. Milam and Marc Birnbaum and Christopher Ganson and Susan L. Handy and Jerry Walters},
  journal={Transportation Research Record},
  pages={10 - 16}
Several studies have rigorously documented the induced travel effect, in which added highway capacity leads to added vehicle travel. Despite the evidence, transportation planning practice does not fully account for this phenomenon, with the result that estimates of the potential congestion-reducing benefits of added highway capacity may be overstated and estimates of potential environmental impacts understated. In 2015, the California Department of Transportation (Caltrans) sponsored a review… 

Figures and Tables from this paper

Induced Vehicle Travel in the Environmental Review Process

If we expand roadway capacity, more drivers will come, or so economic theory suggests and a substantial body of empirical research now shows. Despite strong evidence, the “induced travel” effect is

Air pollution emission effects of changes in transport supply: the case of Bogotá, Colombia

An exact estimate of induced demand that may result from highway expansion in Bogotá is not available, but this analysis highlights that such projects could lead to an increase in emissions unless there is a combined effort to managing demand of private vehicle trips.

White-box flight simulator built with system dynamics to support urban transportation decision-making and address induced travel demand

A white-box flight simulator based on a System Dynamics model to support urban transportation decision-making and address ITD is presented and it is possible to improve the causal understanding of ITD.

A New Traffic Safety Paradigm

This report examines the emerging understanding of traffic risks and new safety strategies, and the importance of more comprehensive safety analysis.

A New Traffic Safety Paradigm 30 January 2019

Despite large investments in traffic safety programs and technologies, motor vehicle crashes continue to impose high social costs, and have recently started to increase. New strategies are needed to

Developing Policy for Urban Autonomous Vehicles: Impact on Congestion

An important problem for surface transport is road traffic congestion, which is ubiquitous and difficult to mitigate. Accordingly, a question for policymakers is the possible impact on congestion of

A New Traffic Safety Paradigm 28 August 2018

This report examines the emerging understanding of traffic safety and strategies that can provide large benefits, including more multi-modal planning, efficient transport pricing, Smart Growth development policies, and TDM programs.

Analysing Road Traffic Situation in Lilongwe: An Agent Based Modelling (ABM) Approach

The predictive model of the dual carriage informed that by 2021, commuters will spend MK 5,187,168 on fuel more than single-lane business as usual scenario of 2019, saving motorists MK 3,921,624.00 annually.

Planning of High-Power Charging Stations for Electric Vehicles: A Review

Electrification of mobility is paving the way in decreasing emissions from the transport sector; nevertheless, to achieve a more sustainable and inclusive transport system, effective and long-term

Mitigating Congestion Using Environment Protective Dynamic Traffic Orchestration

This paper proposes a solution that establishes on-demand, virtual bus lanes to prioritize public transportation over other traffic and provide detour guidelines for other drivers, while causing insignificant detour penalties.



Road Expansion, Urban Growth, and Induced Travel: A Path Analysis

Abstract Claims that roadway investments spur new travel, known as induced demand, and thus fail to relieve traffic congestion have thwarted road development in the United States. Past studies point

Road supply and traffic in California urban areas

Generated Traffic and Induced Travel Implications for Transport Planning

Traffic congestion tends to maintain equilibrium. Congestion reaches a point at which it constrains further growth in peak-period trips. If road capacity increases, the number of peak-period trips

Traffic Forecasts Ignoring Induced Demand: a Shaky Fundament for Cost-Benefit Analyses

Although the phenomenon of induced traffic has been theorized for more than 60 years and is now widely accepted among transport researchers, the traffic-generating effects of road capacity expansion

Daytime Effects of Raised Pavement Markers on Horizontal Curves

A study was performed to address driver response to the application of raised pavement markers (RPM) by measuring changes in speed and encroachment distances into the opposing travel lane after

Impact of Highway Capacity and Induced Travel on Passenger Vehicle Use and Greenhouse Gas Emissions

  • 2014

The Fundamental Law of Road Congestion: Evidence from US Cities

  • American Economic Review,
  • 2011

Comparative Evaluations on the Elasticity of Travel Demand

  • Presented at 84th Annual Meeting of the Transportation Research
  • 2005