Focus on Congestion Relief

View all Traffic Congestion Factoids.

Demand for highway travel by Americans continues to grow as population increases, particularly in metropolitan areas. Construction of new highway capacity to accommodate this growth in travel has not kept pace. Between 1980 and 1999, route miles of highways increased 1.5 percent while vehicle miles of travel increased 76 percent. The Texas Transportation Institute estimates that, in 2003, the 85 largest metropolitan areas experienced 3.7 billion vehicle-hours of delay, resulting in 2.3 billion gallons in wasted fuel and a congestion cost of $63 billion (Source: 2005 Urban Mobility Report, TTI). And traffic volumes are projected to continue growing. The volume of freight movement alone is forecast to nearly double by 2020. Congestion is largely thought of as a big city problem, but delays are becoming increasingly common in small cities and some rural areas as well.

work zone with traffic

Congestion results when traffic demand approaches or exceeds the available capacity of the system. While this is a simple concept, it is not constant. Traffic demands vary significantly depending on the season of the year, the day of the week, and even the time of day. Also, the capacity, often mistaken as constant, can change because of weather, work zones, traffic incidents, or other non-recurring events.

DOT Congestion Relief Initiative

In May 2006, then US DOT Secretary Mineta announced the National Strategy to Reduce Congestion on America's Transportation Network, which provides the framework for government officials, the private sector, and most importantly, the citizen-user, to take the necessary steps to make today's congestion a thing of the past. The objective of the initiative is to reduce congestion, not simply to slow its increase. Congestion is not an insurmountable problem. But solutions will require a smarter approach to capacity expansion and improved productivity of existing transportation assets. The Department has a six-point plan for addressing congestion relief that can be found on the U.S. DOT Congestion Initiative Web Site.

FHWA Focuses on Congestion Relief

The Federal Highway Administration (FHWA) is focusing on a number of high-priority efforts to help reduce congestion on the nation's highways in support of the Congestion Relief Initiative. Together, these efforts provide information that allows more informed decisions, better coordination and quick action that help avoid and reduce traffic congestion. See more information on these and other strategies in the Congestion Reduction Toolbox.

Tolling and Pricing—Value pricing entails fees or tolls for road use which vary by level of vehicle demand on the facility. Fees are typically assessed electronically to eliminate delays associated with manual toll collection facilities.

Public Private Partnerships—"Public-private partnerships" (PPP) refer to contractual agreements between a public agency and private sector entity that allow for greater private sector participation in the delivery of transportation projects. FHWA is working with our partners in the public and private sector to further investigate these promising partnerships.

Real-Time Traveler Information—Real time travel information is "decision-quality" information that travelers can access, understand and act on to choose the most efficient mode and route to their final destination. Timely and detailed information about traffic incidents, the weather, construction activities, transit and special events, all aid in improving travel time predictability, better choices and reduced congestion.

Traffic Incident Management—Traffic incident management is a combination of public safety functions and traffic management functions–it requires cooperation between various public agencies to reduce congestion by clearing traffic crashes and removing stalled vehicles. FHWA is championing laws, policies and practices that speed up the clearance of major and minor incidents that create congestion.

Work Zone Mobility and Highways for LIFE—The Work Zone Safety and Mobility Rule advocates stronger consideration and management of work zone safety and mobility impacts to reduce congestion during construction projects. The Highways for Long-lasting, Innovative, Fast construction of Efficient (also known as HfL) and safe pavements and bridges pilot program as outlined in SAFETEA-LU is meant to accelerate the rate of adoption of innovations and technologies, thereby improving safety and highway quality while reducing congestion caused by construction.

Traffic Signal Timing—Signal timing should correspond to the current traffic patterns. Often signals are initially timed, but not re-adjusted when traffic patterns change. This results in inefficiency and unnecessary delays. Goal: work with state and local agencies in congested metropolitan areas and encourage best practices for improved traffic signal timing.

More Congestion Relief Links

To see the full range of Congestion Reduction tools, visit the Congestion Reduction Toolbox. For links to related FHWA Program Offices, visit the Links page. For contact information within the FHWA offices, visit the Contacts page. For links to congestion reduction-related web sites for every state, visit the Information By State page.

Publications

FHWA has produced two reports in its Traffic Congestion and Reliability series.

To view PDF files, you need the Adobe Acrobat Reader.