Police chiefs have claimed they are sending a clear warning to drivers not to flout the law after dozens were stopped during an operation in Swaffham this week.
Local officers joined forces with Environment Agency and HM Revenue and Customs (HMRC) staff to carry out checks on more than 40 vehicles on the main routes around the town.
Two motorists were fined during the operation on Monday.
And Breckland inspector James Rushton said: “We are sending a clear message to those who believe they can evade their legal responsibilities.
“They will not go unpunished and we will continue to run operations like to detect and prevent rural crime.”
Environment Agency officials carried out waste licence checks, while HMRC staff tested fuel. Members of the HMRC hidden economy team also carried out roadside interviews.
A total of 45 vehicles were pulled over on the A47 or the A1065 around the town during the operation, in which more than 2,000 vehicles passed through police cameras.
Police say two notices were issued for vehicle faults, though no cases of illegal fuel being used were found.
Mr Rushton said: “Traffic violations were dealt with using words of advice, and roadside tickets were issued for more significant offences.”