Strategies for Improving Traffic Operations at Oversaturated Diamond Interchanges

Herrick, G Curtis; Messer, Carroll J.

i

Strategies for Improving Traffic Operations at Oversaturated Diamond Interchanges

1992-03-01
By Herrick, G Curtis ; Messer, Carroll J.

File Language:

English

Details

Creators:

Herrick, G Curtis ; Messer, Carroll J.
Corporate Creators:

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

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

Diamond Interchanges Geometric Design Highway Capacity Peak Hour Traffic Signalized Intersections Traffic Flow Traffic Queuing Traffic Signal Timing
Publication/ Report Number:

FHWA/TX-92/1148-4F
Resource Type:

Tech Report
Geographical Coverage:

United States ; Texas
Edition:

Final-September 1987 March 1992
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

This is the fourth and final report conducted within research project 1148 entitled "Guidelines for Operational Control of Diamond Interchanges" conducted by Texas Transportation Institute for Texas Department of Transportation within its HR&P research program. This final report (1148-4F) contains recommended strategies for improving traffic operations at signalized diamond interchanges that are becoming oversaturated (i.e., have demand volumes exceeding phase capacity) for periods of time during the peak rush hours of the day. This problem is expected to grow worse with time as traffic was found to increase at about 3.2% per year in the six largest Texas cities. Enhanced features for third-generation traffic control are also commended for consideration in future specification updates of diamond controllers. Traffic signal manufacturers may also wish to examine these new features as the operational need for them rises. In addition, enhanced traffic detector strategies are also provided to identify the presence of queue backups onto the freeway drive oversaturated conditions.
Format:

PDF
Funding:

Study No. 2-18-88-1148
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:64672b3ac6f150c77df61415ccf61a582c454f5db7bbd268a66e94ce382cac91f5c4336e543c984ad979b52e85b9d1babbbb140c38dd85e9aa8f0cdbc00d287c
Download URL:

https://rosap.ntl.bts.gov/view/dot/84787/dot_84787_DS1.pdf
File Type:

[PDF - 3.53 MB ]

File Language:

English

ON THIS PAGE

Details

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.