Map
Annual Person-Hours of Delay per Eligible Driver: 1982 and 1997
(a) Cities with population under 1 million
(b) Cities with population over 1 million
NOTES:
An eligible driver is someone 16 years and older who is eligible for a driver's license. The cities shown represent the 50 largest metropolitan areas,
as well as others chosen by the states sponsoring the study. For a detailed explanation of the formulas used, see the source document.