THE SIMULATION OF TRAFFIC FLOWS AT HIGH DENSITY MOTORWAY JUNCTIONS - RESULTS AND THEIR SIGNIFICANCE FOR CONSTRUCTION AND OPERATION
DIE SIMULATION VON VERKEHRSABLAEUFEN AN HOCHBELASTETEN AUTOBAHNEINFAHRTEN - ERGEBNISSE UND BEDEUTUNG FUER BAU UND BETRIEB
RECOMMENDATIONS FOR THE LENGTH OF MANOEUVRING LANES ARE DERIVED FROM A SIMULATION PROCESS FOR TRAFFIC FLOW AT HIGH DENSITY MOTORWAY JUNCTIONS. THE INVESTIGATIONS ARE BASED ON OBSERVATIONS OF EIGHT MOTORWAY ENTRANCES. THE SIMULATION IS DESCRIBED FOR THE ENTRY ROAD COLOGNE LOEVENICH, DIRECTION LEVERKUSEN, WHICH HAS A MANOEUVRING LANE 245 M LONG AND CARRIES 121 VEHICLES PER 1200 SEC. THE INVESTIGATION GAVE AN OPTIMUM LENGTH OF MANOEUVRING LANE OF 300 M. IN GENERAL FOR TRAFFIC DENSITIES OF UP TO 2500 VEHICLES PER HOUR OVER THE WHOLE CROSS SECTION (I.E. TWO LANE THROUGH CARRIAGEWAY PLUS ENTRY), OF WHICH UP TO 50% COULD ENTER OVER THE RAMP, THE SIMULATION RESULTED IN OPTIMUM LENGTHS OF BETWEEN 300 AND 350 M. THE LENGTH IS INDEPENDENT OF THE GRADIENT AND ONLY PARTLY DEPENDENT ON THE RADIUS OF THE ENTRY RAMP. NO SIGNIFICANT ADVANTAGES COULD BE NOTED BY IMPOSING A SPEED LIMIT OF 100 KM/H OR FOR SPEED LIMIT COMBINED WITH A BAN ON OVERTAKING ON THE ENTRY BY HEAVY GOODS VEHICLES. THE OVERTAKING BAN FOR HEAVY VEHICLES CAN GIVE A SMALL IMPROVEMENT OF TRAFFIC FLOW IF THE GOODS TRAFFIC DOES NOT NEED TO ENCROACH ON THE OVERTAKING LANE DURING EVASIVE MANOEUVRES.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/6525734
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Authors:
- VAUBEL, U
- Publication Date: 1975-5
Language
- German
Media Info
- Pagination: 83-9
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Serial:
- Straßenverkehrstechnik
- Volume: 19
- Issue Number: 3
- ISSN: 0039-2219
Subject/Index Terms
- TRT Terms: Access roads; Freeways; Highway curves; Interchanges; Legislation; Length; Merging traffic; Passing; Radius; Simulation; Speed limits; Surface course (Pavements); Traffic flow; Traffic lanes; Trucks
- Uncontrolled Terms: Longitudinal profile; Prohibitions
- ITRD Terms: 435: Access road; 2872: Bend (road); 433: Interchange; 6488: Length; 2825: Longitudinal profile; 1236: Lorry; 647: Merging traffic; 2752: Motorway; 1822: Overtaking; 1525: Prohibition; 6402: Radius; 9103: Simulation; 624: Speed limit; 671: Traffic flow; 2827: Traffic lane
- Subject Areas: Law; Motor Carriers; I21: Planning of Transport Infrastructure; I73: Traffic Control;
Filing Info
- Accession Number: 01303233
- Record Type: Publication
- Source Agency: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)
- Files: ITRD
- Created Date: Nov 21 2010 8:59AM