公开(公告)号：CA2444144C

公开(公告)日：2010-03-09

申请号：CA2444144

申请日：2003-10-03

Applicant: INT ROAD DYNAMICS INC

Inventor： BUSHMAN ROBERT ,  BERGAN TERRY

IPC: G08G1/01 ,  G08G1/09

Abstract: A variable speed limit work zone safety system is provided herein. It includ es at least two spaced-apart stations. Each station includes a plurality of sensor s to gather information relative to at least one of traffic flow and road conditions. Th e 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 t o motorists.

公开(公告)号：CA2444144A1

公开(公告)日：2004-04-21

申请号：CA2444144

申请日：2003-10-03

Applicant: INT ROAD DYNAMICS INC

Inventor： BERGAN TERRY ,  BUSHMAN ROBERT

IPC: G08G1/01 ,  G08G1/09

Abstract: A variable speed limit work zone safety system is provided herein. It includ es at least two spaced-apart stations. Each station includes a plurality of sensor s to gather information relative to at least one of traffic flow and road conditions. Th e 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 t o motorists.