The distance between spike placement
1.5 meters to 5 meters distance can be accepted, according to their actual point of view. If there is a design unit indicators, according to the design plan to do! We are also selling this piece, not listening to engineering units have this question
This is because the speed of the car is different, in principle, speed travel faster, distance can be relatively large! Mainly to consider the visual effects of driving
There should be no special requirements, for example, in the parking lot and on the motorway, the distances are different
