00732513

Component

https://doi.org/10.1177/0361198196156600104

http://scholar.google.com...Wang&publication_year=1996

Numerical methods for solving traffic flow continuum models have been studied and efficiently implemented in traffic simulation codes in the past. Explicit and implicit methods have been used in traffic simulation codes in the past. Implicit methods allow a much larger time step size than explicit methods to achieve the same accuracy. However, at each time step a nonlinear system must be solved. The Newton method, coupled with a linear iterative method (Orthomin), is used. The efficient implementation of explicit and implicit numerical methods for solving the high-order flow conservation traffic model on parallel computers was studied. Simulation tests were run with traffic data from an 18-mile freeway section in Minnesota on the nCUBE2 parallel computer. These tests gave the same accuracy as past tests, which were performed on one-processor computers, and the overall execution time was significantly reduced.

This paper appears in Transportation Research Record No. 1566, Traffic Flow Theory and Traffic Flow Simulation Models.

English

p. 31-38

1996

Transportation Research Record

0309059631

Appendices (1) ; Figures (8) ; References (16) ; Tables (3)

Accuracy; Deployment; Numerical analysis; Parallel processing; Simulation; Time; Traffic simulation

Highways; Operations and Traffic Management; I71: Traffic Theory

TRIS, TRB

Feb 27 1997 12:00AM

• CLUSTER ANALYSIS AS TOOL IN TRAFFIC ENGINEERING
• COMPARISON OF NETSIM, NETFLO I, AND NETFLO II TRAFFIC SIMULATION MODELS FOR FIXED-TIME SIGNAL CONTROL
• COMPARISON OF SIMULATION MODULES OF TRANSYT AND INTEGRATION MODELS
• EVALUATION OF SCATSIM-RTA ADAPTIVE TRAFFIC NETWORK SIMULATION MODEL
• HYBRID MODEL FOR ESTIMATING PERMITTED LEFT-TURN SATURATION FLOW RATE
• PASSING SIGHT DISTANCE AND OVERTAKING DILEMMA ON TWO-LANE ROADS
• TRAFFIC PLATOON DISPERSION MODELING ON ARTERIAL STREETS