BTS is looking at several aspects of congestion and vehicle travel.  Both passenger and freight travel, for various modes, are being examined.  Work includes identification of data sources, analyzing those data for useful insights, and providing measures of congestion and vehicle travel. Examples of current work are:

• Seasonal adjustment of monthly highway congestion data 
• Trending and seasonal adjustment of vehicle miles traveled
• Improved estimates of freight ton-miles .
• Rail freight performance measures

Related BTS Special Reports, Technical Reports, and Issue Briefs

• Seasonal Variation in Traffic Congestion: A Study of Three U.S. Cities – August 2008
• Opinions on Cell Phone Use on Airplanes, Congestion, and Telecommuting – from the 2006 and 2007 Omnibus Household Survey – July 2008
• Trends in Personal Income and Passenger Vehicle Miles – October 2007
• Highway Bridges in the United States - An Overview – September 2007
• A Decade of Growth in Domestic Freight Rail and Truck Ton-Miles Continue to Rise – July 2007
• Better Road Congestion Measures are Needed – May 2003