TRAFFIC SIGNAL CONTROL AT A FOUR-WAY INTERSECTION IN HIGH SPEED SURROUNDINGS. FORECAST STRATEGY
PROGNOSSTRATEGI FOER SIGNALREGLERING I HOEGHASTIGHETSKORSNINGAR
The object of the forecast strategy is to minimize the total delays for vehicles passing through a traffic signal controlled intersection while at the same time not allowing the individual waiting time to exceed 90 seconds. The aim of the new control strategy is to try to minimize the nuisance to main road transit traffic when the intersection had traffic signals installed. The aim is to affect other traffic flows as slightly as possible. In the investigation a simulated model has been built of the four-way-intersection in high speed surroundings. The model is a computer based model in the program language FORTRAN. The model has been tested on a number of different combinations of flows on the main road and on the access road. During the tests of flow combinations, the proportion of vehicles turning off and the proportion of vehicles in column on the main road have been varied. Furthermore, a factor of error has been used in the predicting model to see whether the efficiency of the forecast strategy has been affected by the error in the forecast. The result from the investigation indicates that the forecast strategy, compared with the direct strategy, gives quite a lower average delay. (TRRL)
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Corporate Authors:
Lund University of Technology, Sweden
Institution for Traffic Engineering, Fack 725
S-220 07 Lund 7, Sweden -
Authors:
- Dagsberg, T
- Publication Date: 1982
Language
- Swedish
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: 69 p.
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Serial:
- Issue Number: 52
Subject/Index Terms
- TRT Terms: Access roads; Arterial highways; Forecasting; High speed ground transportation; High speed vehicles; Intersections; Mathematical models; Signalized intersections; Speed; Traffic delays; Traffic flow; Traffic signals
- Identifier Terms: FORTRAN (Computer program language)
- Uncontrolled Terms: High; Models
- ITRD Terms: 435: Access road; 9010: Delay; 132: Forecast; 6489: Height; 455: Junction; 2748: Main road; 6473: Mathematical model; 5408: Speed; 671: Traffic flow; 565: Traffic signal
- Subject Areas: Highways; Operations and Traffic Management; Railroads; I71: Traffic Theory; I73: Traffic Control;
Filing Info
- Accession Number: 00392759
- Record Type: Publication
- Source Agency: Swedish National Road and Transport Research Institute (VTI)
- Report/Paper Numbers: Monograph
- Files: ITRD, TRIS
- Created Date: Apr 29 1985 12:00AM