Impossible? All it takes is two rubber tubes across a street at a fixed distance apart and a little box on one end to calculate the speed based on the time between wheels passing over them. Done all the damn time in the UK.
And they don’t claim to measure it at every single location across the city. They claim to have measured it at ten locations. That takes, at most, twenty installations.
Impossible? All it takes is two rubber tubes across a street at a fixed distance apart and a little box on one end to calculate the speed based on the time between wheels passing over them. Done all the damn time in the UK.
And they don’t claim to measure it at every single location across the city. They claim to have measured it at ten locations. That takes, at most, twenty installations.
ThisThis sentence in the post title doesn’t specify that [the ten locations]