Mark Wigmore ('Focus on speed obscures the issue', NCE 25 November) asserts that a crash can happen at some point completely unrelated to the cause. In other words the driver's reasoning seems to be 'I crashed because some unco-operative traffic signals/slower vehicle/geek on a bike half a mile back frustrated me'.
Frustration may well be an explanation for an incident but it cannot be allowed to be an excuse.
The intensive education, analysis and redesign which Mr Wigmore proposes to help drivers manage hazards and therefore reduce frustration is not going to happen quickly enough. To protect the innocent from the speed-deprived, only appropriate speed restrictions are likely to succeed.
Speed kills, Mr Wigmore. Don't be an apologist for the impatient.
Bob Pritchard, 7 Lovedale Crescent Edinburgh