ASTM E2793 - 16

    Standard Guide for Evaluation, Calibration, and Correlation of E274 Friction Measurement Systems and Equipment

    Active Standard ASTM E2793 | Developed by Subcommittee: E17.21

    Book of Standards Volume: 04.03

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    Significance and Use

    5.1 Friction characteristics of road surfaces are monitored by friction measurement systems, and the operating procedure for the use of these systems is found in Test Method E274. However, mechanical or electronic system anomalies, over time, could result in measurement errors or inaccuracies. This requires that each of these systems be evaluated, calibrated and correlated on a regular basis. The interval between calibrations depends on the frequency of use, maintenance and other factors. If any repairs are made to the system that may affect the calibration, the system should be recalibrated before further use. Generally, calibrations and correlations are recommended to be performed on an annual basis by one of the FTCs.

    5.2 This guide defines the process of ensuring that Test Method E274 systems produce consistent and accurate data and correlating the Test Method E274 systems to national benchmark Test Method E274 systems.

    1. Scope

    1.1 This guide describes the evaluation, calibration, and correlation of Test Method E274 friction measurement systems as conducted at a Field Test Center (FTC).2 The evaluation, calibration and correlation process; using the specialized equipment, facilities, surfaces, trained personnel, and Area Reference Friction Measurement Systems (ARFMS) available at each FTC; are conducted using the procedures described below.

    1.2 The FTC complies with the requirements of Guide E1890. Guide E1890 requires a more stringent calibration process and requires all ARFMS system be correlated together once a year on three surfaces at three speeds with twelve repeats each for a total of 108 pairs.

    1.3 This guide is offered as a process to identify and quantify the variables that affect system performance, to minimize the effect of these variables, and to provide a means to relate Test Method E274 friction measurement systems to reference skid measurement systems.

    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.

    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

    E274 Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire

    E501 Specification for Rib Tire for Pavement Skid-Resistance Tests

    E524 Specification for Smooth Tire for Pavement Skid-Resistance Tests

    E556 Test Method for Calibrating a Wheel Force or Torque Transducer Using a Calibration Platform (User Level)

    E867 Terminology Relating to Vehicle-Pavement Systems

    E1890 Guide for Validating New Area Reference Skid Measurement Systems and Equipment

    F377 Practice for Calibration of Braking/Tractive Measuring Devices for Testing Tires

    F457 Test Method for Speed and Distance Calibration of Fifth Wheel Equipped With Either Analog or Digital Instrumentation

    ICS Code

    ICS Number Code 21.260 (Lubrication systems)

    UNSPSC Code

    UNSPSC Code

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E2793-16

    Citation Format

    ASTM E2793-16, Standard Guide for Evaluation, Calibration, and Correlation of E274 Friction Measurement Systems and Equipment, ASTM International, West Conshohocken, PA, 2016,

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