| Title | National Traffic Speeds Survey I: 2007 [Traffic Tech] |
|---|---|
| Record ID | 61618 |
| Corporate Creator | United States. Department of Transportation. National Highway Traffic Safety Administration |
| Publisher | United States. National Highway Traffic Safety Administration |
| Publication Date | 20120901 |
| Language | English |
| Abstract | The speed survey reviewed in this edition of "Traffic Tech" was designed as a geographic cluster sample of primary sampling units (PSUs), which can be a city, county, or group of two or three counties. PSUs were chosen to represent a range of combinations of regions of the United States, level of urbanization, and type of topography (flat, hilly, mountainous). Speeds were acquired on randomly drawn road segments on limited access highways, major and minor arterial roads, and collector roads. Speed measurement sites were selected in road segments with various degrees of straight, curved, flat, and hilly geometry. Twenty to 60 sites were selected in each PSU. |
| Rosap ID | dot:2037 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/2037 |
| TRT Terms | Arterial highways; Average travel speed; Field studies; Freeways; Speeding; Traffic speed |
| General Subjects | Collector roads; speed estimates |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
1454121 |
| Report Number | DOT HS 811 644 |
| Availability | NHTSA - Behavioral Safety Research |
| Resource type | Brief |
| URL | https://ntlrepository.blob.core.windows.net/lib/61000/61600/61618/811644.pdf |
| Format | |
| Database | NTL Digital Repository |