Measurement of annual hours of peak hour excessive delay per capita. Read the final rule in the Federal Register [82 FR 5970 (January 18, 2017)]. Initially, the rule applies to urbanized areas of more than 1 million people that are also in nonattainment or maintenance areas for ozone, carbon monoxide or particulate matter. In the second performance period (which begins on January 1, 2022), the population threshold changes to more than 200,000. States and MPOs with NHS mileage within an applicable urbanized area must coordinate on a single, unified target.
This research develops a Normal Condition Regain Time (NCRT) estimation system, which automatically determines the NCRT at detector stations on the me...
Volume/service flow ratio (VSF) is calculated by the Highway Performance Monitoring System (HPMS) software as an indicator of peak hour congestion. It...
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.