United States. Federal Highway Administration (2006). NHTS Brief: Is Congestion Slowing Us Down?: National Household Travel Survey. United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58872
United States. Federal Highway Administration. NHTS Brief: Is Congestion Slowing Us Down?: National Household Travel Survey. United States. Federal Highway Administration, 2006. https://rosap.ntl.bts.gov/view/dot/58872.
United States. Federal Highway Administration NHTS Brief: Is Congestion Slowing Us Down?: National Household Travel Survey. United States. Federal Highway Administration, 2006, ROSA P. https://rosap.ntl.bts.gov/view/dot/58872.
The U.S. transportation system’s quality and pervasiveness are almost transparent to us as we move between jobs, markets, education, healthcare, and leisure activities. But the transparency ends when congestion occurs—the system breaks down as too many vehicles try to move through at the same time. Congestion reduces mobility, increases auto-operating costs, adds to air pollution, and causes stress. Congestion is considered one of the major urban transportation problems. Commuters know about congestion--work trips are particularly concentrated in time and space. Nearly 30 percent of the 130 million workers in the U.S. usually leave for work between 7:00 and 8:00 am. During the 80s and early 90s, due to a combination of decentralization of workplaces and the shift to driving alone to work, both commute distances and speed of travel to work increased. However, the 2001 NHTS data shows a leveling off of commuting distances, and a real decline in commute speeds (see Exhibit 1).
United States. Federal Highway Administration (2006). NHTS Brief: Is Congestion Slowing Us Down?: National Household Travel Survey. United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/58872
United States. Federal Highway Administration. NHTS Brief: Is Congestion Slowing Us Down?: National Household Travel Survey. United States. Federal Highway Administration, 2006. https://rosap.ntl.bts.gov/view/dot/58872.
United States. Federal Highway Administration NHTS Brief: Is Congestion Slowing Us Down?: National Household Travel Survey. United States. Federal Highway Administration, 2006, ROSA P. https://rosap.ntl.bts.gov/view/dot/58872.
ROSA P serves as an archival repository of USDOT-published products including scientific
findings, journal articles, guidelines, recommendations, or other information authored or co-authored by
USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to
ensure public access to scientific information.
Links with this icon indicate that you are leaving a Bureau of Transportation
Statistics (BTS)/National Transportation Library (NTL)
Web-based service.
Thank you for visiting.
You are about to access a non-government link outside of
the U.S. Department of Transportation's National
Transportation Library.
Please note: While links to Web sites outside of DOT are
offered for your convenience, when you exit DOT Web sites,
Federal privacy policy and Section 508 of the Rehabilitation
Act (accessibility requirements) no longer apply. In
addition, DOT does not attest to the accuracy, relevance,
timeliness or completeness of information provided by linked
sites. Linking to a Web site does not constitute an
endorsement by DOT of the sponsors of the site or the
products presented on the site. For more information, please
view DOT's Web site linking policy.
To get back to the page you were previously viewing, click
your Cancel button.