Why do you think they have average speed camera's in roadworks ? I can assure you it's nothing to do with making money, p******** motorists off ? The fundamental reason why there is a speed limit is to keep the people working behind the cones or Variogaurd (that’s the continuous metal barrier) safe and don't get wiped out by some muppet driving past who is updating there farcebook to moan about being restricted to 50 mph and no one is working.
Trust me a few cones and rope provide absolutely no protection whatsoever. The metal barrier (if hit at 50 mph) is designed to move by up to 600mm and trust me it does.
I’ve been working (well managing from the office) on the stretch of the M1 between junction 10 and 13 for the last 2.5 years, so I know exactly what it’s like working in roadworks and it’s not a great environment. Behind the Variogaurd you do feel a bit more segregated (read safer) from the travelling public than the cones, but either way, not massively enjoyable.
The average speed camera’s in our section of works do work and a considerable number of motorists get prosecuted. The local safety camera partnership deal with issuing FPN’s and the like, so we don’t know exactly how many get caught.
If there one bit of advice I ever give and people take on board it is: Please stick to the speed limit through roadwork’s, if you have an accident and enter the works area, I might be the other side of the cones and may not be quick enough to jump out of the way.
Thanks for listening and please take it on board.