Whilst travelling south on the M1 this morning and entering the roadworks just south of Luton, I spied the sign saying ‘Average Speed Check’
Now, what is the significance of this sign? Does it imply that our average speed is being checked against the signed maximum speed limit? Does it mean that if our average speed is higher than the speed limit we face a conviction? Or perhaps a prize?
Or is it a tease with no real significance? Simply there to worry us with more signs than we really need?
Surely they can’t convict on average speed if they don’t indicate what the permitted average speed is. And it will, by definition, be lower than the signed maximum speed no matter how long a stretch of road it is tested over.
As we all know, our average speed is always lower than the maximum we may achieve in any journey.
Otherwise we could have some fun by passing the start point of an average speed check, drawing to a halt for a few minutes, perhaps ten minutes, then accelerating to the maximum possible speed of whatever vehicle we’re in, safe in the knowledge that our average speed would still be below the signed maximum.
Or have I got the concept completely wrong?