 |
| Purchase Information |
| Use this form to request purchase information on ASTM online subscriptions. |
|
|
Document ASTM E 2177 is offered by IHS as part of an online subscription. This subscription contains many documents on the same topic.
You may also purchase this document alone from the IHS Standards Store.
ASTM E 2177 Document Information:
Title
Standard Test Method for Measuring the Coefficient of Retroreflected Luminance (RL) of Pavement Markingd in a Standard Condition of Wetness
ASTM International
Publication Date:
Dec 10, 2001
Scope:
This test method covers the measurement of the wet retroreflective (R
L) properties of horizontal
pavement marking materials, such as traffic stripes and road surface
symbols, using a portable or
mobile retroreflectometer that can be placed on or before the road
marking to measure the
retroreflection at the prescribed geometry.
This method of measuring the wet retroreflective properties (R L) of
pavement markings measures
the wet retroreflectivity in a standard condition of wetness (see Fig.
1).
Discussion - This test condition typically exists (1) after a rainfall
has ended and the pavement
markings are still wet or (2) as the markings are wet from dew or
humidity.
Retroreflective performance obtained with this test in conditions of
wetness does not necessarily
relate to how markings perform in conditions of rain, that is, as
markings are being rained upon.
NOTE 1 - Test Method E 2176 defines a method to use to measure the
performance of pavement markings
in conditions of simulated rain.
This test method specifies the use of portable or mobile
reflectometers that can measure pavement
markings in accordance with Test Method E 1710. The entrance and
observation angles required of the
retroreflectometer in this test method are commonly referred to as "30
meter geometry."
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.
Keywords:
- dry retroreflection
- mobile retroreflectometers
- pavement markings
- portable retroreflectometer
- retroreflection in wet conditions
About IHS
IHS (NYSE: IHS) is a leading global provider of critical technical information, decision-support tools and related services in a number of industries including aerospace and defense, automotive, construction, electronics, and energy. IHS serves customers ranging from large governments and multinational corporations to smaller companies and technical professionals in more than 100 countries. IHS been in business for more than 45 years and employ more than 2,300 people around the world.
