There is only so much we can take in as drivers and in a split second it is easy to miss something.
Yet across the UK, thousands of road signs which give route directions, street names, limits or hazards are confusing or have disappeared, been knocked down, obscured with grime or foliage or have been damaged.
There are many examples of excessive signage. One junction we saw had 16 signs but psychologists tell us the most messages we can take in at any one time is five.
The deployment of cameras is a bit of a lottery. The easiest solution is to put up a camera and some partnerships are far keener on them than others. There are such huge discrepancies that it isn't a coherent national policy.