| Title | Side Friction for Superelevation on Horizontal Curves Vol I: [Executive Summary] |
|---|---|
| Record ID | 55863 |
| Personal Name Creator |
MacAdam, C.C.; Fancher, P. S.; Segel, L. |
| Corporate Creator | University of Michigan Transportation Research Institute |
| Corporate Contributor |
United States. Federal Highway Administration |
| Publisher | United States. Department of Transportation. Federal Highway Administration |
| Publication Date | 19850000 |
| Language | English |
| Abstract | The basic objective of this study has been to address the issue of how adequate point-mass representations are in predicting friction requirements for actual vehicles operating along superelevated curves. The project focused on this and related questions by combining computer analysis and full-scale vehicle testing. Simple-to-use models for predicting the friction factor requirements at individual wheel locations were first developed and applied to the steady-turning condition. An existing comprehensive computer model used for predicting transient or non-steady maneuvering situations was also employed to analyze friction demand while maneuvering along superelevated curves. Highway tests were then performed for two passenger cars and a five-axle tractor-semitrailer to collect representative test data and assist invaliding the predictions of the computer models. Finally, a sensitivity analysis was performed to illustrate the relative importance and interactions of various vehicle parameters and highway geometrics in influencing side friction requirements. |
| Rosap ID | dot:29442 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/29442 |
| TRT Terms | Highways; Highway design; Highway curves; Computer models; Vehicle tests; Turning lanes |
| Geographical Coverage |
United States |
| TRIS Online Accession No |
469115 |
| Report Number | FHWA-RD-86-024 |
| Resource type | Brief |
| URL | https://ntlrepository.blob.core.windows.net/lib/55000/55800/55863/FHWA-RD-86-024_SIDE_FRICTION.PDF |
| Format | |
| Database | NTL Digital Repository |