WHAT ARE THESE BLACK CABLES ACROSS ROAD? | UK | TUBE COUNTER | TRAFFICE COUNTERS | THE MAIN PURPOSE

I am sure everyone who drives in Europe or America has come across these black cables (tubes) on road. I was curious to find the actual function of these tubes and how the information being used. I have called on the number provided on the yellow boxes, attached to the tubes.

#roadsafety #trafficrules #speedlimit

black cable on street,black cable on road,the black cable on road,black wires on road,black wires in street,black tubes on road,black tubes in street,road counter,new traffic lights,speed camera,new speed cameras,traffic rules uk,traffic rules usa,drive safely,