Siskiyou summit negative grade arrester bed for runaway trucks : final report.

Hardy, Thomas A.; Hamilton, Allison; Beecroft, Gordon

i

Siskiyou summit negative grade arrester bed for runaway trucks : final report.

1986-01-01
By Hardy, Thomas A. ; Hamilton, Allison ; Beecroft, Gordon

File Language:

English

Details

Creators:

Hardy, Thomas A. ; Hamilton, Allison ; Beecroft, Gordon
Corporate Creators:

Oregon State Highway Division. Research Section
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

Experimental Feature Project OR 77-02
Resource Type:

Tech Report
Geographical Coverage:

Oregon
Corporate Publisher:

Oregon State Highway Division. Research Section
Abstract:

Most escape ramps are designed to use gravity as the primary deceleration mechanism. These ramps provide an exit from the roadway to an adjacent hillside, ascending at grades of up to 40%. Loose gravel is often used on these ramps which, while aiding in the deceleration, is primarily provided to prevent the trucks from rolling back down the ramp. Unfortunately, ascending ramps are not possible in all locations where they are needed. This report presents the results from a special type of escape ramp, a ramp that is located on a descending grade. ; When an ascending ramp proved infeasible, it was decided to design and build a descending escape program was established to determine if a descending grade gravel arrestor bed, including transverse gravel mounds, could safely stop a runaway truck. The testing was divided into three segments: choosing aggregate size and gradation, testing the effect of gravel transverse mounds, and on-site testing of the escape ramp prior to its opening for use by the public.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/22528/dot_22528_DS1.pdf
File Type:

[PDF - 1.42 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:a27a75a60432ab06b67d3f05e4f645523d491520820e0a07455806e2875d5dc1fc97775e6aecd664d6a8cc0fb1e50d1fbecacf73072c1348c49859bcdad1d1f6

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.