1.1 This test method covers the measurement of skid resistance of paved surfaces with a specified full-scale automotive tire.
1.2 This test method utilizes a measurement representing the steady-state friction force on a locked test wheel as it is dragged over a wetted pavement surface under constant load and at a constant speed while its major plane is parallel to its direction of motion and perpendicular to the pavement.
1.3 The values measured represent the frictional properties obtained with the equipment and procedures stated herein and do not necessarily agree or correlate directly with those obtained by other pavement friction measuring methods. The values are intended for use in evaluating the skid resistance of a pavement relative to that of other pavements or for evaluating changes in the skid resistance of a pavement with the passage of time. The values are insufficient to determine the distance required to stop a vehicle on either a wet or a dry pavement. They are also insufficient for determining the speed at which control of a vehicle would be lost, because peak and side force friction are also required for these determinations.
1.4 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are provided for information only.
- Grading & Base
- Pavement Management
- State Aid
- Mn/DOT Technical Certification
- MEPDG (NCHRP 1-37A)
- FHWA Pavements
- Seasonal Load Limits
Non-Destructive Testing Request (MS Word 39 KB, 1 p)