RE Ralph Musgrave’s recent letter inferring that speeding drivers are safer than those who obey the law (HAS, April 27).

I think the Transport Research Institute (Stirling University) is reasonably reliable in such matters and their research shows that “drivers with penalty points are more likely to have a crash than those with a clean licence”.

Professor Steve Straddling writes: “We have been able to highlight the fact that drivers who have been caught by speed cameras are significantly more likely to have a collision than those who have not been caught.”

Peter Wilson, Barnard Castle, Co Durham.