U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document. This report does not constitute a standard, specification, or regulation.
The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers’ names may appear in this report only because they are considered essential to the objective of the document.
The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes for continuous quality improvement.
1. Report No. PL-18-003 |
2. Government Accession No. |
3. Recipient’s Catalog No. |
||||
4. Title and Subtitle Simplified Highway Capacity Calculation Method for the Highway Performance Monitoring System |
5. Report Date October 15, 2017 |
|||||
| 6. Performing Organization Code | ||||||
7. Author(s) Richard Margiotta and Scott Washburn |
8. Performing Organization Report No. |
|||||
9. Performing Organization Name and Address Cambridge Systematics, Inc. |
10. Work Unit No. (TRAIS) |
|||||
11. Contract or Grant No. DTFH61-13-D-00014 |
||||||
12. Sponsoring Agency Name and Address Federal Highway Administration |
13. Type of Report and Period Covered Final Report |
|||||
14. Sponsoring Agency Code |
||||||
15. Supplementary Notes |
||||||
16. Abstract The Federal Highway Administration’s Highway Performance Monitoring System (HPMS) provides information on the extent, condition, performance, use, and operating characteristics of the Nation’s highways. Each year State Transportation Agencies must submit HPMS data to the FHWA. The Sample Panel portion of HPMS provides detailed statistical data on a randomly selected sample of roadway sections on the State’s public road system. One data item submitted for sample panels is capacity (Sample Panel Data Item 69). The HPMS Field Manual guidance for capacity is as follows: “The capacity of a roadway facility is the maximum reasonable hourly rate at which vehicles can be expected to transverse a point or a uniform section of lane or roadway during a given time period under prevailing road-way, traffic, and control conditions.” Reasonable expectancy is that the stated capacity can be achieved repeatedly. The Highway Capacity Manual (HCM) provides procedures, formulas, graphics, and tables in assessing roadway capacity. This item should be estimated based on procedures consistent with the HCM. The results of the project are the development of:
|
||||||
17. Key Words Highway Capacity Manual; level of service; generalized service volumes; HPMS data |
18. Distribution Statement No restrictions |
|||||
19. Security Classif. (of this report) Unclassified |
20. Security Classif. (of this page) Unclassified |
21. No of Pages 46 |
22. Price N/A |
|||
Form DOT F 1700.7 (8-72) Reproduction of completed pages authorized
