Desperate families were today joining a march through Bradford city centre demanding an end to "transport chaos".

They say disabled people are left waiting for hours to get to day centres or back home because of irregular transport services and are distressed because they have bus 'escorts' they do not know.

Now members of three unions who work on the welfare transport have passed a vote of 'no confidence' in West Yorkshire Transport Services - part of Education Bradford.

The changes in services came about because of substantial investment in the service, including new buses, and a high-tech routing plan.

The march was beginning at the Shearbridge transport depot in Shearbridge Road today, ending outside the Jacob's Well council offices where a rally was to be held.

Lynda Banks, whose two sons suffer from a rare syndrome which has left them disabled, said: "We want them to give us a life again, because we haven't got one now."

She said the irregular and often late transport distressed and unsettled her sons, particularly Robert, 19, who is hyperactive.

Her elder son, Philip, is wheelchair bound, and both suffer from rare Opitz-Kavegga syndrome which is caused by a faulty X chromosome in the mother and causes growth and bowel problems. Her sons also suffer from epilepsy.

Mrs Banks, pictured, of Little Horton Green, Little Horton, said: "They were not expected to live beyond their teens and every day is precious. This transport chaos is a nightmare."

Both sons attend Shipley Resource Centre and should leave at 9am and arrive back home at 4.30pm. But Mrs Banks said it was not unusual for buses to be an hour late while her sons waited.

"Once the bus home didn't arrive until 7.30pm. I was beside myself with worry."

About 150 members of public services unions Unison, the GMB and Transport and General Workers Union were joining today's march.

Liz Devlin, the Council's Unison branch chairman, said: "Changes to the routes and system have caused enormous distress to families and staff."

A spokesman for Education Bradford said: "We have open communication and there are clear agreed procedures for dealing with disputes between trade unions and management. However, no issues have been raised with us under these procedures. Neither have we been made aware of any votes, ballots or marches."