Variable speed limit system
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United States of America Patent
Stats
-
Nov 30, 2004
Grant Date -
Apr 22, 2004
app pub date -
Oct 21, 2002
filing date -
Oct 21, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A variable speed limit work zone safety system is provided herein. It includes at least two spaced-apart stations. Each station includes a plurality of sensors to gather information relative to at least one of traffic flow and road conditions. The station includes a controller which is programmed to analyse data which is received from the sensors and to derive, therefrom, an optimum speed limit at a selected location adjacent to, or in, the work zone. The station further includes a communication sub-system to communicate data related to the optimum speed limit to a message board to display the optimum speed to motorists.
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