A Study of Detector Reliability for a Safety Warning System on the Gulf Freeway

Dudek, Conrad L.; Dutt, Amitabh; Messer, Carroll J.; Ritch, Gene P.

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A Study of Detector Reliability for a Safety Warning System on the Gulf Freeway

1974-11-01
By Dudek, Conrad L. ; Dutt, Amitabh ; Messer, Carroll J. ; ...

File Language:

English

Details

Creators:

Dudek, Conrad L. ; Dutt, Amitabh ; Messer, Carroll J. ; Ritch, Gene P.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas Highway Department ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Driver Information Systems Freeways Highway Traffic Control Systems Reliability Traffic Safety Traffic Surveillance Traveler Information And Communication Systems Vehicle Detectors Warning Devices
Publication/ Report Number:

165-7
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Interim- September, 1971 - November, 1974
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

An experimental warning system has been installed on the Gulf Freeway in Houston as a means of alerting drivers approaching crest type vertical curves of stoppages downstream of the crest. Successful automatic operation of the warning system is dependent upon the reliability of the system components. Earlier studies showed that the developed control logic is responsive to stoppage waves providing the hardware functions properly. The studies also indicated a relatively high frequency of detector failures. The frequency of detector failures prompted a study to evaluate the reliability of the warning system based on the detector failure and repair rates experienced on the Gulf Freeway surveillance and control system to ascertain whether detector redundancy or improved maintenance would be necessary. Classical models relating to reliability of maintained and non-maintained systems were employed. Reliability functions for warning signs installed at isolated locations are also presented.
Format:

PDF
Funding:

2-8-72-165
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:f39f5eca3596526a8e97d70c86c6e6a392292084dafe0991b41a2866cc8ac1ab87271344ac2794bf2b997934ce9e890b27fe623020ea051d21428de504da7f90
Download URL:

https://rosap.ntl.bts.gov/view/dot/85272/dot_85272_DS1.pdf
File Type:

[PDF - 1.65 MB ]

File Language:

English

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