My Lords, we talked about the speed limit being out of date. I said earlier that, while heavy goods drivers already exceed existing speed limits, they cannot be caught by speed cameras, so enforcement is often very difficult. They currently break the law anyway. Heavy goods vehicles have to be fitted with speed limiters that limit them to a maximum speed of 56 miles per hour, and the average speed for heavy goods vehicles on motorways is already 53 miles per hour. Therefore, these changes are unlikely to have a big impact on speed.
I hope I have given a sufficient explanation of all the issues raised by the noble Lord; failing that, I would be very happy to write to him, as he raised a number of issues. It is a contentious issue, and I am certainly happy to look at it again and drop him a line where there is doubt.