Engineering Factors Affecting Traffic Signal Yellow Time

Chang, Myung-Soon; Messer, Carroll J.

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Engineering Factors Affecting Traffic Signal Yellow Time

1984-12-01
By Chang, Myung-Soon ; Messer, Carroll J.

File Language:

English

Details

Creators:

Chang, Myung-Soon ; Messer, Carroll J.
Corporate Creators:

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

Santiago, Alberto J. ; Bissell, Howard
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration ; United States. Department of Transportation. Federal Highway Administration. Turner-Fairbank Highway Research Center
Subject/TRT Terms:

Change Interval (Traffic Signal Cycle) Red Interval (Traffic Signal Cycle) Signalized Intersections Traffic Signals Yellow Interval (Traffic Signal Cycle)
Publication/ Report Number:

FHWA-RD-85-054
Resource Type:

Tech Report
Right Statement:

Public Domain
Geographical Coverage:

United States
Edition:

Final Report
Contracting Officer:

Santiago, Alberto J.
Corporate Publisher:

United States. Department of Transportation. Federal Highway Administration
Abstract:

Driver behavior to traffic signal change intervals (yellow plus all-red) was evaluated using the data collected from timelapse cameras at seven sites. Particularly, signal change interval timing was examined as a function of drivers' response characteristics involving their speed, distance, and time to reach the stop line. Drivers' selected yellow response times and deceleration rates were analyzed. New perception and brake reaction time of 1.2 seconds with a 10.5 ft/s/s of deceleration rate for level grade appeared to be good estimators. Four alternative methods to design signal change interval were discussed. These included (1) a continued use of the current formula using one perception-brake reaction time and one deceleration rate for all speeds, (2) a continued use of the current formula using different perception-brake reaction times and deceleration rates for different speeds, (3) the use of time to reach the stop line by clearing vehicles, and (4) the use of probability of a vehicle stopping. A new method to determine an all-red interval was presented.
Format:

PDF
Funding:

DTFH61-82-C-00061
Collection(s):

Federal Highway Administration
Main Document Checksum:

urn:sha-512:de4a8181494ba35fb6fff1d252ce18aac7f4f8f6e6dcd9788d69774da0c07800f527665d589d8ab0870b2f3c9c78160331b89d3ded91b9c2d5c580fba2d9e6e8
Download URL:

https://rosap.ntl.bts.gov/view/dot/88407/dot_88407_DS1.pdf
File Type:

[PDF - 4.58 MB ]

File Language:

English

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