Process and apparatus for regulating traffic
First Claim
1. A method for regulating traffic with movable light signalling equipment including mobile traffic lights, in traffic restriction areas using sensor controls which prescribe go times defined as green phases and clearance times defined as red phases in the traffic restriction area to be secured, a traffic restriction area being an area along a blocked stretch of roadway in which traffic is restricted by the light signalling equipment, the method comprising:
- sensing traffic and measuring the transit times of vehicles over a measured distance extending substantially along the traffic restriction area to be secured with the sensor controls;
determining the clearance time as a function of the transit time measurements obtained; and
controlling the light signalling equipment to regulate traffic in the traffic restriction area to be secured based on the determined clearance time.
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Accused Products
Abstract
Process for regulating traffic by means of moveable light signalling equipment (mobile traffic lights; A, B), particularly at restricted areas (E), using sensor controls which prescribe go times (green phases, TF) and clearance times (red phases TR) in the area to be secured, i.e. along a blocked stretch (S), wherein the transit time (TD) of vehicles (F) over a measured distance (M) extending substantially along the blocked stretch (S) is measured and the clearance time (TR) is established as a function of the transit time measurements (TD) obtained.
56 Citations
17 Claims
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1. A method for regulating traffic with movable light signalling equipment including mobile traffic lights, in traffic restriction areas using sensor controls which prescribe go times defined as green phases and clearance times defined as red phases in the traffic restriction area to be secured, a traffic restriction area being an area along a blocked stretch of roadway in which traffic is restricted by the light signalling equipment, the method comprising:
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sensing traffic and measuring the transit times of vehicles over a measured distance extending substantially along the traffic restriction area to be secured with the sensor controls; determining the clearance time as a function of the transit time measurements obtained; and controlling the light signalling equipment to regulate traffic in the traffic restriction area to be secured based on the determined clearance time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Apparatus for regulating traffic in traffic restriction areas to be secured, a traffic restriction area being an area along a blocked stretch of roadway in which traffic is restricted by traffic lights, comprising:
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moveable light signal stations including mobile traffic lights using sensor controls which prescribe go times defined as green phases and clearance times defined as red phases which are adjustable in the traffic restriction area to be secured; and means for measuring transit time of vehicles along a measured distance extending substantially along the traffic restriction area to be secured; wherein electrical signals derived from the transit time measurements are output from the means for measuring the transit time and fed into the sensor controls. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification