Motorway speed limits

An easy win

Sir,– Minister for Transport Eamon Ryan says increasing public transport is an easy win in helping reduce emissions this year.

A much easier win for the environment and for people’s pockets would be to reduce the speed limit on motorways to 100km/h.

Fuel consumption at 100km/h is approximately 25 per cent less than at 120km/h.

Reducing the speed limit to 80km/h for larger vehicles like the larger van, rigid trucks and articulated lorries would yield even better results because they have very poor aerodynamics and would substantially reduce their fuel costs.

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As it is hard to maintain a high average speed after leaving the motorway, any advantage to speeding down the motorway is soon lost on these slower roads, as lorries and vans spend a lot of time being stationary, either in traffic or in loading bays.

A very easy win for the Minister and completely cost free. – Yours, etc,

DAVID DORAN,

Bagenalstown,

Co Carlow.