ASTM E445/E445M-88(2001)
Historical Standard: ASTM E445/E445M-88(2001) Standard Test Method for Stopping Distance on Paved Surfaces Using a Passenger Vehicle Equipped With Full-Scale Tires
SUPERSEDED (see Active link, below)
ASTM E445 / E445M
1. Scope
1.1 This test method covers the measurement of stopping distance on paved surfaces with a passenger vehicle equipped with specified full-scale automobile tires.
1.2 This test method utilizes a measurement of stopping distances representing the non-steady state skid resistance on four locked wheels as the vehicle decelerates over a wetted pavement surface under specified limits of static wheel load and from a desired speed, while the vehicle remains essentially parallel to its original direction of motion.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.4 This standard may involve hazardous materials, operations, and equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E178 Practice for Dealing With Outlying Observations
E274 Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire
E501 Specification for Rib Tire for Pavement Skid-Resistance Tests
F403 Test Method for Tires for Wet Traction in Straight-Ahead Braking, Using Highway Vehicles
F457 Test Method for Speed and Distance Calibration of Fifth Wheel Equipped With Either Analog or Digital Instrumentation
Keywords
Braking force/torque (on pavement surfaces); Passenger cars; Pavement surfaces; Stopping distance; Tire testing;
ICS Code
ICS Number Code 43.020 (Road vehicles in general); 93.080.20 (Road construction materials)
DOI: 10.1520/E0445_E0445M-88R01
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