Citation

Bryson DAJ, Stone JR. Transp. Res. Rec. 1987; 1145: 48-53.

Copyright

(Copyright © 1987, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The Intersection Advisor is a prototype expert system that recommends geometric modifications to improve intersection operation. It complements existing microcomputer programs that consider the other two aspects of intersection design, volumes and signalization. Intersection Advisor is intended for eventual incorporation in a comprehensive, interactive intersection design package. M.1, a knowledge-based expert system development tool, was used to develop the Intersection Advisor to run on IBM or IBM-compatible microcomputers. During an interactive consultation the advisor requests information on the intersection volumes, critical movements, geometry, and constraints on approach improvement. It then recommends the most efficient improvements for each approach by generating one of nearly 600 possible reports. Recommendations are arrived at by determining an "ideal" lane configuration for the given traffic flows. The ideal design is checked against the improvement constraints, and a next-best design is selected, if necessary. The best feasible design is then compared with the existing design, and the user is informed of any modifications required. Intersection designs produced with the advisor compare well with those produced using the guidelines of the 1985 Highway Capacity Manual.

Record URL:
http://onlinepubs.trb.org/Onlinepubs/trr/1987/1145/1145-006.pdf

TRT Terms: Design; Expert systems; Geometric design; Intersections; Microcomputers; Prototypes; User interfaces (Computer science)
Uncontrolled Terms: Interactive computing

Language: en

Keywords

Traffic Signs, Signals and Markings; Roads and Streets--Intersections; Artificial Intelligence--Expert Systems; Transportation--Traffic Control