00474252

Component

http://onlinepubs.trb.org...trr/1986/1069/1069-013.pdf

https://scholar.google.co...onje&publication_year=1986

Simulation is very useful for generating traffic data. However, for validating a traffic model, field data are essential. Because of the random variation of the traffic arriving at signalized intersections, a large number of observations are necessary at a particular intersection. To obviate the collection of a large amount of data, the Bootstrap technique was applied to a limited amount of field data that were collected at three fixed-time signalized intersections. In addition, the data were supplemented by simulation to cover a wide range of cycle lengths, types of flow, degrees of saturation, and ratios of the variation in the mean of the number of arrivals per cycle. A recently developed traffic model based on a Markov process and a geometric probability distribution, the Modified Geometric Model (M Geom Model), was used to estimate the measures of effectiveness commonly used for optimization purposes, namely, delay and stops. Satisfactory results were obtained, indicating that a limited amount of field data is required for validating a traffic model.

Publication of this paper sponsored by Committee on Traffic Control Devices. Publication of this paper sponsored by Committee on Traffic Control Devices. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

00490259

HS-040 092

pp 73-79

1986

Transportation Research Record

0-309-04063-9

Print

Figures (6) ; References (6) ; Tables (11)

Field studies; Geometric distributions; Markov processes; Measures of effectiveness; Signalized intersections; Stopped time delays; Traffic delays; Traffic simulation; Validation

Field data

Highways; Operations and Traffic Management; I73: Traffic Control

TRIS, TRB

Oct 31 1987 12:00AM

• A FURTHER NOTE ON UNDULATION AS A SPEED CONTROL DEVICE
• A PROBABILISTIC APPROACH FOR DETERMINING THE CHANGE INTERVAL (DISCUSSION AND CLOSURE)
• A REASSESSMENT OF THE TRAFFIC SIGNAL CHANGE INTERVAL
• ACCIDENT EXPERIENCE OF FLASHING TRAFFIC SIGNAL OPERATION IN PORTLAND, OREGON
• ADAPTING THE U.S. DEPARTMENT OF TRANSPORTATION RAIL-HIGHWAY CROSSING RESOURCE ALLOCATION MODEL TO THE MICROCOMPUTER
• ANALYTICAL WARRANT FOR SEPARATE LEFT-TURN PHASING (ABRIDGMENT)
• COUNTERING SIGN VANDALISM WITH PUBLIC SERVICE ADVERTISING (ABRIDGMENT)
• CRITIQUE OF RAIL-HIGHWAY GRADE CROSSING EFFECTIVENESS RATIOS AND RESOURCE ALLOCATION PROCEDURES (DISCUSSION AND CLOSURE)
• EFFECTIVENESS OF FLASHING BEACONS IN REDUCING ACCIDENTS AT A HAZARDOUS RURAL CURVE (ABRIDGMENT)
• GUIDELINES FOR PROTECTED/PERMISSIVE LEFT-TURN SIGNAL PHASING
• GUIDELINES FOR SELECTING TYPE OF LEFT-TURN PHASING
• RUMBLE STRIPS AND PAINT STRIPES AT A RURAL INTERSECTION
• THE EFFECTS OF WIDE EDGE LINES ON LATERAL PLACEMENT AND SPEED ON TWO-LANE RURAL ROADS
• THE SAFETY, ECONOMIC, AND ENVIRONMENTAL CONSEQUENCES OF REQUIRING STOPS AT RAILROAD-HIGHWAY CROSSINGS
• THE USE OF CONSTANT WARNING TIME SYSTEMS AT RAIL-HIGHWAY GRADE CROSSINGS
• TIMING DESIGN OF SIGNAL CHANGE INTERVALS (DISCUSSION AND CLOSURE)
• TIMING DESIGN OF TRAFFIC SIGNALS