Transportation Data and Statistics: Highways

California Department of Transportation

PeMS is also an Archived Data User Service (ADUS) that provides over ten years of data for historical analysis.

California Department of Transportation

Provides traffic count information for city and county streets as well as state highways. Data sources include annual average daily traffic (AADT) reports, ramp volumes, and peak hour volume data reports.

U.S. Department of Transportation, Federal Highway Administration

The Highway Statistics Series consists of annual reports containing analyzed statistical information on motor fuel, motor vehicle registrations, driver licenses, highway user taxation, highway mileage, travel, and highway finance.

U.S. Department of Transportation, Federal Highway Administration

Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 4,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjusted annually to match the vehicle miles of travel from the Highway Performance Monitoring System and are continually updated with additional data.

Texas Transportation Institute

Urban Mobility and Congestion Statistics—congestion index, travel delay, fuel consumption, congestion cost—for every city included in the study.

California Department of Transportation

The Economic Analysis Branch routinely conducts life-cycle benefit/cost analysis for proposed state highway and public transit projects. Such analysis is performed using Cal-B/C, a PC-based spreadsheet model developed by the Branch and outside consultants. Cal-B/C can be used to analyze many types of highway construction and operational improvement projects, as well as some Intelligent Transportation System (ITS) and transit projects.