Vehicle Braking on Steep Down Grades: Field Experiment Results Hamilton Associates

Format:

Conference/Event

Author/Creator:

Navin, Francis P. D., author.

Conference Name:

International Congress & Exposition (1998-02-23 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

Steep downgrades are known to increase accident rates yet little is published on how well vehicles brake and handle on steep downgrades. Braking tests were completed on grades of; 1, 7 13, 21 and 28 percent. The tested surfaces were asphalt, in both dry and wet conditions, with a car and a utility vehicle, with and without ABS brakes. The 13 percent grade was grooved and the test sequence repeated.The braking tests found a non-linear decreasing relationship between the average coefficient of friction or drag factor and downgrade.Pavement grooving on the 13 percent grade of a local road has eliminated the crash occurances for a two-year period. Testing showed that grooving also improved vehicle handling

Notes:

Vendor supplied data

Publisher Number:

980369

Access Restriction:

Restricted for use by site license