The city and county councils aim to reduce emissions from vehicle engines in the area, particularly from parked coaches which are running their engines just to keep the drivers warm or cool, depending on the weather.

Why not fit the coach park with a supply of warm or cool air, as needed, generated electrically at fairly modest cost, and fed by flexible hoses to parked coaches?

There would need to be a means of getting it into the coaches without leaving the door open, but their ventilation systems should be adaptable for this purpose.

Running the engines of stationary vehicles, whether in the coach park or elsewhere, could then be banned completely.

David Witt

Old Marston

Oxford