ASTM E2341/E2341M-05(2019)
Standard Test Method for Determining the Stopping Distance Number by Initial Speed and Stopping Distance at Traffic Incident Sites

Standard No.

ASTM E2341/E2341M-05(2019)

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E2341/E2341M-05(2019)

Scope

1.1 This test method covers determination of an average stopping distance number (SDN) under the conditions that this method was executed. The experimental conditions are generally intended to be similar to those of a specified traffic incident. The data from this method is not comparable to measured distances of a specified traffic incident vehicle that cannot be shown to have continuous, full application of its braking system. 1.2 This test method determines the SDN from the measured stopping distance and initial speed when the wheels on specified axles are braked in the same manner as the specified traffic incident vehicle. The evaluation vehicle’s braking system is required to duplicate the specified incident vehicle for both type (conventional, partial ABS, or full ABS) and functionality (all brakes functional or not). 1.3 The method documents the test conditions as a basis for evaluating their similarity to conditions of a specified traffic incident. 1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the test, 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. 1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM E2341/E2341M-05(2019) Referenced Document

• ASTM E178 Standard Practice for Dealing With Outlying Observations
• ASTM E274/E274M Standard Test Method for Skid Resistance of Paved Surfaces Using a Full-Scale Tire*， 2020-06-01 Update
• ASTM F403 Standard Test Method for Tires for Wet Traction in Straight-Ahead Braking, Using Highway Vehicles
• ASTM F457 Standard Test Method for Speed and Distance Calibration of a Fifth Wheel Equipped With Either Analog or Digital Instrumentation

ASTM E2341/E2341M-05(2019) history

• 2019 ASTM E2341/E2341M-05(2019) Standard Test Method for Determining the Stopping Distance Number by Initial Speed and Stopping Distance at Traffic Incident Sites
• 2005 ASTM E2341/E2341M-05(2014) Standard Test Method for Determining the Stopping Distance Number by Initial Speed and Stopping Distance at Traffic Incident Sites
• 2005 ASTM E2341/E2341M-05(2009) Standard Test Method for Determining the Stopping Distance Number by Initial Speed and Stopping Distance at Traffic Incident Sites
• 2005 ASTM E2341/E2341M-05 Standard Test Method for Determining the Stopping Distance Number by Initial Speed and Stopping Distance at Traffic Incident Sites