Citation

Hudson WR. Transp. Res. Rec. 1979; 702: 249-259.

Copyright

(Copyright © 1979, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The solution to the problems of providing uniformity in roughness measurements is not an easy one. No perfect answer exists, only a set of intelligent alternatives. It is vital, however, that some type of framework be set up so that coordination can begin. A multifaceted approach is proposed as follows: Develop a Generalized Roughness Index (GRI) which has a sound basis and can provide a pseudo-standard for comparison of all methods. Evaluate the use of an artificial calibration method (such as developed by the Transport and Road Research Laboratory) with a variety of instruments and cases to determine its value, problems, and utility. Apply the concept of a standard rating panel to provide an additional methodology for defining and reproducing the GRI in countries all over the world without the cost of purchasing a stable profilometer, such as the General Motors device. Evaluate the use of rod and level surveys and recommend field equipment to simplify and speed up such surveys for establishing calibration points on a GRI. It is recommended that a GRI be implemented to test these concepts. Cooperation will be needed among several countries and agencies. Particular attention should be given to coordination of research data from the Kenya, Brazil and India projects, in which the World Bank is involved.