Rogue private hire drivers operating with defective vehicles or not meeting licensing regulations have been taken off the road in West Yorkshire.
Police targeted taxi drivers in the Worth Valley area along with officials from Bradford City Council.
Officers said they wanted to nip problems in the bud ahead of the rush for cabs over the Christmas period.
The licences issued to five cabs were suspended in the Worth Valley during the operation.
And officers reminded those queueing for Hackney Carriages to behave at official ranks.
Pc Eddie Irving said: "Suspending a vehicle from operating is not something we take lightly as we appreciate it is a person's livelihood.
"However, people expect taxis to be a safe means of transport and operations like this prove this isn't always the case.
"People should check that the vehicle and or driver are licensed and only ever use a reputable company that they know and trust."
Sgt Chris Watson, of the Bingley and Worth Neighbourhood Policing Team, added: "As an NPT we are working hard to help people stay safer over the Christmas and New Year period and more operations of this type are planned for the coming weeks."