1.1 This test method covers the measurement of peak braking coefficient of paved surfaces using a standard reference test tire (SRTT) as described in Specification E1136 that represents current technology passenger car radial tires. General test procedures and limitations are presented for determining peak braking coefficient independent of surface conditions. Actual surface test conditions are determined and controlled by the user at the time of test. Test and surface condition documentation procedures and details are specified. This measurement quantifies the peak braking coefficient at the time of test and does not necessarily represent a maximum or fixed value.
1.2 This test method utilizes a measurement representing the peak braking force on a braked test tire passing over a road surface. This test is conducted with a tire under a nominal vertical load at a constant speed while its major plane is parallel to its direction of motion and perpendicular to the pavement.
1.3 The measured peak braking coefficient obtained with the equipment and procedures stated herein may not necessarily agree or correlate directly with those obtained by other surface coefficient measuring methods.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.5 This standard does not purport to address all of the safety concerns, if any, 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.
ASTM E1337-90(2012) Referenced Document
ASTM E1136 Standard Specification for A Radial Standard Reference Test Tire*, 1993-04-20 Update
ASTM E274 Standard Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire*, 1997-04-20 Update
ASTM E556 Standard Test Method for Calibrating a Wheel Force or Torque Transducer Using a Calibration Platform (User Level)*, 1995-04-20 Update
ASTM E867 Terminology Relating to Vehicle-Pavement Systems*, 1997-04-20 Update
ASTM F377 Standard Practice for Calibration of Braking/Tractive Measuring Devices for Testing Tires*, 1994-04-20 Update
ASTM F408 Standard Test Method for Tires for Wet Traction in Straight-Ahead Braking, Using a Towed Trailer*, 1999-04-20 Update
ASTM F457 Standard Test Method for Speed and Distance Calibration of a Fifth Wheel Equipped With Either Analog or Digital Instrumentation*, 1999-09-10 Update
ASTM E1337-90(2012) history
2019ASTM E1337-19 Standard Test Method for Determining Longitudinal Peak Braking Coefficient (PBC) of Paved Surfaces Using Standard Reference Test Tire
2018ASTM E1337-90(2018) Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using Standard Reference Test Tire
1990ASTM E1337-90(2012) Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using Standard Reference Test Tire
1990ASTM E1337-90(2008) Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using Standard Reference Test Tire
1990ASTM E1337-90(2002) Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using a Standard Reference Test Tire
1990ASTM E1337-90(1996) Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using a Standard Reference Test Tire
1990ASTM E1337-90 Standard Test Method for Determining Longitudinal Peak Braking Coefficient of Paved Surfaces Using a Standard Reference Test Tire