Calibration Procedures for Roadmeters

Wouter Gulden, P. E.; Georgia Department of Transportation

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Calibration Procedures for Roadmeters

1986-04-01
By Wouter Gulden, P. E.

[PDF-3.20 MB]

English

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Details:

Creators:

Wouter Gulden, P. E.
Corporate Creators:

Georgia Department of Transportation
Contributors:

Brown, Douglas
Corporate Contributors:

United States. Federal Highway Administration. Office of Implementation
Subject/TRT Terms:

[+]

Accuracy Alternatives Analysis Calibration Correlation Analysis Equations Linear Regression Analysis Profilometers Road Meters Roughness
Publication/ Report Number:

FHWA- TS-86- 201
Resource Type:

Tech Report
Right Statement:

Public Domain
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

Brown, Doug
Corporate Publisher:

United States. Federal Highway Administration. Office of Implementation
Abstract:

The research project was conducted to evaluate the performance of an inexpensive non-contact roughness measuring device, Roughness Surveyor. as well as the potential use of this device as a calibration reference for Response-Type Road Roughness Measuring (RTRRM) systems. A correlation was also conducted between RTRRM systems from three different States (Georgia, Florida, and Minnesota) against the Roughness Surveyor, the inertial profilometer owned by the Ohio DOT. and the profilometer designed and operated by the South Dakota DOT. A total of sixteen test sites were selected for the correlation and calibration study with a total of 52 individual test sections encompassing a variety of roughness levels and pavement surface types. The results of the roughness testing showed an excellent correlation between all the devices. The standard error of estimate, however, was rather large for some of the linear regression equations. The units from Florida, Ohio. and South Dakota provided serviceability index ratings. An analysis of these ratings indicated that different values were obtained between the units on the same test sections. The evaluation of the Roughness Surveyor indicated that the roughness result obtained were insensitive to speed variations. Problems were encountered with obtaining valid roughness readings on extremely rough textured surfaces, such as surface treatment. The testing repeatability of the Roughness Surveyor was not as good as that obtained with the Ohio Profilometer and slightly better than two of the three RTRRM systems. The day-to-day variability was much higher for the Roughness Surveyor than for the Ohio Profilometer and the RTRRM systems.
Format:

PDF
Funding:

DOT-FH-11-9398 Task Order 6
Collection(s):

Federal Highway Administration
Main Document Checksum:

[+]

urn:sha256:76be2f6a695e62f7c50d3fad7f4a3a1fde1d81c1a8b4daa3b628efe9bd89e7f7
Download URL:

https://rosap.ntl.bts.gov/view/dot/74795/dot_74795_DS1.pdf
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Calibration Procedures for Roadmeters

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