Magazine Article

Intersection Monitor for Traffic-Light-Preemption System

TBMG-9

09/01/2006

Abstract
Content

The figure shows an intersection monitor that is a key subsystem of an emergency traffic-light-preemption system that could be any of the systems described in the three immediately preceding articles and in “Systems Would Preempt Traffic Lights for Emergency Vehicles” (NPO-30573), NASA Tech Briefs, Vol. 28, No. 10 (October 2004), page 36. This unit is so named because it is installed at an intersection, where it monitors the phases (in the sense of timing) of the traffic lights. The mode of operation of this monitor is independent of the type of traffic-light-controller hardware or software in use at the intersection. Moreover, the design of the monitor is such that (1) the monitor does not, by itself, affect the operation of the traffic-light controller and (2) in the event of a failure of the monitor, the traffic-light controller continues to function normally (albeit without preemption).

Meta TagsDetails
Citation
"Intersection Monitor for Traffic-Light-Preemption System," Mobility Engineering, September 1, 2006.
Additional Details
Publisher
Published
Sep 1, 2006
Product Code
TBMG-9
Content Type
Magazine Article
Language
English