FIELD: physics.
SUBSTANCE: control over traffic at crossing consists in control effected with the help the dummy and identification of vehicles at near and far boundaries of the crossing. Vehicle detected at far boundary and identified by reader as a special vehicle is permitted to cross the crossing. For this, at detection of said special vehicle by its motion towards the crossing, said dummy is forced to green light unless said special vehicle crosses the crossing. In case at detection of special vehicle running to the crossing green light is switched on, green light is retained. Special vehicle crossing of road crossing is defined by its detection by appropriate reader at exit from road crossing.
EFFECT: automatic changeover of the dummy light for priority crossing for special vehicles.
9 cl, 2 dwg
