This week 903 safety camera zones were rolled out across the country.

They will operate in areas with a history of speed-related collisions in an attempt to reduce the number of motorists exceeding the speed limit.

But how effective will they be? Are they likely to modify drivers' behaviour?

Our motoring expert Michael Sheridan joined us for The Last Word on Wheels to discuss the issue.

Listen to the interview in full by pressing the play button on this page.