Michael Elliott (Letters 11 April) says there is a current obsession with speed; and is presumably referring to an obsession with highway authorities and engineers of reducing it.
Reducing vehicle speed has been proved to enhance safety, either by preventing collisions in the first place or by reducing the severity of the outcome. I have yet to see a research report on speed that did not conclude that reducing speed reduced casualties. For highway authorities and engineers, speed reduction measures are an enormously important tool in helping to achieve the government's road casualty reduction targets.
Gordon Heath (M), Catlins Lane, Pinner, Middlesex HA5 2BX