• AASHTO T 257-96 (2018)

AASHTO T 257-96 (2018)

Standard Method of Test for Instrumental Photometric Measurements of Retroreflective Materials and Retroreflective Devices (Discontinuation Notice)

American Association of State Highway and Transportation Officials , 2017

Publisher: AASHTO

File Format: PDF

$48.00$97.00


This standard covers procedures for instrumental determinations of photometric characteristics of retroreflective materials and retroreflective devices.This method describes procedures used to measure photometric quantities that relate to the visual perception of retroreflected light. The most significant usage is in the relation of the nighttime vehicle headlamps, retroreflector, and driver's eye geometry.

AASHTO T 257-96 (2018) History

AASHTO T 257-96 (2018)

AASHTO T 257-96 (2018)

$48.00 $97.00

AASHTO T 257-96 (2013)

AASHTO T 257-96 (2013)

$109.00 $218.91

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