SUE Wallace is concerned buses are getting wider. She will be pleased to know this isn't the case.

All buses, including the ftr, conform to standard limits laid down by the Department for Transport.

Dr Richard Greaves is concerned the levels of emissions from the ftr are greater than ordinary buses (Letters, 15 July).

He will be pleased to know that both the ftr and our standard articulated buses used on the Park&Ride services are fitted with the same Volvo Euro III' engine.

However, the ftr is additionally fitted with a CRT (Continuously Regenerating Trap) exhaust system which further reduces emissions. But to concentrate simply on the vehicle is to miss the real reason why ftr is important for the people of York.

First is working closely with City of York Council to find ways to help reduce the number of cars coming into the city.

The ftr has been designed to stand out from the crowd and to get people thinking how public transport really can provide an alternative to the private car for some journeys.

It has certainly generated debate on the topic. With more people choosing public transport for some journeys, we really will start to see an improvement in the environment, and that's great for all of us.

Peter Edwards, Commercial director, First York.