Selection of Safe Roadside Cross Sections
- ISBN-10
- 0309023351
- ISBN-13
- 9780309023351
- Category
- Motor vehicles
- Pages
- 57
- Language
- English
- Published
- 1975-01-01
- Publisher
- Transportation Research Board National Research
- Authors
- Graeme D. Weaver, E. L. Marquis, Robert M. Olson
Description
In the investigation of vehicle behavior resulting from traversal of the roadside, computer simulation validated by full-scale tests were used to investigate vehicle behavior at the three critical regions of the roadside: the hinge-point, the front slope, and the toe-of-slope including four ditch configurations Vehicle operating conditions included speeds from 40 to 80 mph, encroachment angles of 7, 15, and 25 degrees, and steer-control conditions simulating a free-wheeling vehicle and attempted return-to-the road maneuvers on the front slope. Details are given of the two criteria used to evaluate roadside traversal and the ditch evaluation curves developed for various severity indices. A series of charts is included for selecting traversable slope-ditch combinations.
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