Police stopped more than 50 vehicles and made five arrests during a crackdown on criminals coming into Calderdale.
Officers from the Upper Valley neighbourhood policing teamed up with the regional roads policing team and officers from Greater Manchester Police and Lancashire Police to carry out checks on cars, lorries and vans coming in and out of Calderdale.
Inspector Dave Browning, who leads the Upper Valley neighbourhood policing team, urged residents to tell them what crime is happening in the area so they could set up more operations like this one to tackle it.
The officers were also on the look-out for scrap metal thieves. One vehicle was seized after being found over-laden with metal.
Their operation comes as crime-fighting charity Crimestoppers tries to boost the amount of information being called in about metal theft across Yorkshire.
Crimestoppers regional manager Dave Hunter said: “Crimestoppers wants to encourage the public to fight back against the metal thieves who create severe disruption for local communities and cost millions to the UK economy.”
Assistant Chief Constable Geoff Dodd, from West Yorkshire Police, said: “This is an issue we take very seriously.
“Tackling metal theft is a top priority.
“But the answer to this issue lies in the communities we serve across West Yorkshire.
“In order to assist us in tackling this type of crime we need members of the public to be our eyes and ears and to pass on any information they have.
“All information helps us to build a clear picture of what is going on.”