Campaigners angry at motorists speeding past their doorsteps decided enough was enough.

Home-made asphalt traffic-calming humps, together with painted warnings, appeared overnight in the Silsden street.

Within a day of police officers visiting the scene in Spencer Avenue, the DIY humps had vanished as quickly as they had appeared. The 'ramp' warnings, painted in the road, remain.

Police say their investigations have so far failed to find the culprits, though local residents claim they know the identity of those responsible.

The Keighley News yesterday afternoon was told the names of the alleged culprits, but we were unable to contact them before going to press.

Police were alerted when a motorist complained his car had been damaged by the humps. Sgt Allan Gee told us: "Officers went down there and made some enquiries, but no one seemed to know who was responsible. When the officers returned to the area the following day the humps had gone.

"The unlawful placement of these traffic-calming devices can create a danger to road users, and culprits can be prosecuted for obstruction of the highway. Although this particular road I believe is unadopted, it is still a public highway."

Residents say the road is a death trap, and many sympathise with the DIY traffic-calming.

Alan Mill, of neighbouring North Dene Road, says: "The cars flash up and down this road and one time it was timed that one car passed along here every two minutes. Something needs to be done because it's murder and a wonder there haven't been any accidents. It was right what they did because nothing's been done about the road, even though we've been trying for years."

John Harrison, of Spencer Avenue, adds: "I agree with what they did because there are a lot of old people who live on this road and cars travel quickly along it. If no harm came of what they did, I don't see any harm in it."

Another resident says: "If they were trying to save lives then good on them."

Bradford council's highways department says the road is unadopted and it has no responsibility for its maintenance.

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