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Traffic Overview
Executive Summary
Amidst an economic recovery, the prevalence of fuel efficient vehicles and cheap gasoline prices, the total
number of miles driven on U.S. roads in 2016 increased slightly from last year. This is the fourth consecutive
year since 2012 of increased mileage on U.S. roads. For calendar year 2016, the total number of vehicle
miles driven was 3.2 trillion miles, an increase of 2.8 percent over the previous year’s total of 3.1 trillion miles.
[Page 5]
Travel on U.S. roads is more frequent during the summer months as reflected in the second and third
quarters of the year. The first and fourth quarters usually tend to exhibit harsher weather conditions and
miles traveled in these quarters are lower. The winter months of January through March are the least
popular months to drive. [Page 6]

Roadway Congestion
Construction of new highways has been slow to keep pace with increased highway travel. [Page 7]
Since 2004, the ratio of light vehicle registrations to overall length of U.S. roads increased from 57 vehicles
for each mile of road to 64 registered vehicles per mile of road in 2016, representing an increase of one
percent. [Page 8]
Vehicle Collisions
Due to the inconsistency in state laws regarding the reporting of vehicle collisions, the collection of accurate
data at the national level is very difficult. Nevertheless, our sources report that in 2015, the number of
vehicle collisions on U.S. roads increased 2.2 percent from the previous year. [Page 9]
In 2016, the nationwide ratio of property damage claims per 100 insured light vehicles was 3.6, up from
3.5 in 2015, meaning that 3.6 out of every 100 light vehicles on the road filed for a property damage claim.
[Page 11]
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