Safe Speed Forums

Can any one explain to me the logic of roadworks, matrix signals and safety camera vans on the M4.

Today (14/02/06) around 12.30, weather clear and sunny ,traffic about usual or maybe a bit quieter for this time of day yet matrix signals flashing 60mph both east and westbound between J17 Chippenham and J15 Swindon.

On overbridge was camera van (not near roadworks!!!) and everyone doing 70mph!!!

Roadworks between these junctions showed 50mph signage yet matrix still showed 60mph.

This is a regular occurance along this stretch, sometimes roadworks show 50mph others no restrictions with matrix flashing a different speed.