Washboards (Rhythmic Corrugations) Numerical Rating Verbal Rating Description 9 Very Good/ Excellent No or negligible rhythmic corrugations. 8 Good Corrugations generally less than 1" deep; Less than 10% of the roadway has significant corrugations; Minor influence on ride quality; Very little loss of vehicle control; Little impact on safety. 7 6 Fair Corrugations generally 1" to 2" deep; 10% to 25% of the roadway has corrugations; Ride quality significantly reduced; Some areas where safety is significantly compromised as vehicle control is lost; Major safety issue as drivers are tempted to drive faster, skimming over the top of the corrugations. 5 4 Poor Corrugations generally 2" to 3" deep; Corrugations over 25% or more of the roadway; Severe decline in ride quality; Major safety issue as drivers are tempted to drive faster, skimming over the top of the corrugations. 3 2 Very Poor Similar to Poor, but deeper and more extensive corrugations. 1 Failed Similar to Very Poor, but deeper and more extensive corrugations. 1 2/12/2014 WTTC GH GRRS v 1.4 3 Poor
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Washboards (Rhythmic Corrugations)
Numerical Rating
Verbal Rating Description
9 Very Good/
Excellent No or negligible rhythmic corrugations.
8 Good
Corrugations generally less than 1" deep; Less than 10% of the roadway has significant corrugations; Minor influence on ride quality; Very little loss of vehicle control; Little impact on safety. 7
6
Fair
Corrugations generally 1" to 2" deep; 10% to 25% of the roadway has corrugations; Ride quality significantly reduced; Some areas where safety is significantly compromised as vehicle control is lost; Major safety issue as drivers are tempted to drive faster, skimming over the top of the corrugations.
5
4
Poor
Corrugations generally 2" to 3" deep; Corrugations over 25% or more of the roadway; Severe decline in ride quality; Major safety issue as drivers are tempted to drive faster, skimming over the top of the corrugations. 3
2 Very Poor Similar to Poor, but deeper and more extensive corrugations.
1 Failed Similar to Very Poor, but deeper and more extensive corrugations.
1 2/12/2014 WTTC GH GRRS v 1.4
3 Poor
4 Poor
Washboards (Rhythmic Corrugations)
2 2/12/2014 WTTC GH GRRS v 1.4
4 Poor
Washboards (Rhythmic Corrugations)
3 2/12/2014 WTTC GH GRRS v 1.4
5 Fair
5 Fair
Washboards (Rhythmic Corrugations)
6 Fair
4 2/12/2014 WTTC GH GRRS v 1.4
5 Fair
Washboards (Rhythmic Corrugations)
6 Fair
5 2/12/2014 WTTC GH GRRS v 1.4
6 Fair
Washboards (Rhythmic Corrugations)
6 Fair
6 2/12/2014 WTTC GH GRRS v 1.4
6 Fair
Washboards (Rhythmic Corrugations)
7 Good
7 Good
7 2/12/2014 WTTC GH GRRS v 1.4
Washboards (Rhythmic Corrugations)
7 Good
8 Good
8 2/12/2014 WTTC GH GRRS v 1.4
Washboards (Rhythmic Corrugations)
8 Good
8 Good
9 2/12/2014 WTTC GH GRRS v 1.4
Related Documents
