It is part of the Central Motorway Policing Group’s Operation Tramline which covers the M6 and M6 Toll, the M5, the M42 and the A500 through Stoke-on-Trent.
The officers on duty are using an unmarked HGV which gives them a better view into cars to catch offending drivers.
Now they have pulled over at least three cars on the M6 this morning (June 5).
A CMPG spokesman said: “Good morning B Unit on duty today.
“We will be out across the motorway network in the Staffordshire area & West Midlands area using an unmarked HGV spotting fatal4 and other offences. Keeping our motorways as safe as opposable.
“Our first stop on the M6 results in a van being issued a PG9 for a loose battery. A loose battery is a fire hazard. Please make sure your vehicle batteries are secure on a regular basis.
“A vehicle stopped on the M6 due to heavily tinted front windows. Driver given a choice to remove the tints or receive a PG9 prohibition.
“Another stop check on the M6 and officers discover the state of this tyre. Driver reported.
“Remember the minimum legal tread depth is 1.6mm.”