More than 20 speeding drivers were caught in just three hours during a crackdown by police in Sheffield.
Officers in Fox Hill targeted speeding motorists during a day of action last week.
A marked police vehicle 'detected and processed' 26 motorists for speeding offences in just three hours.
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The minimum penalty for speeding is a £100 fine and three penalty points added to your licence.
A police spokesperson said: "The difference of a few miles per hour can mean the difference between life and death.
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"The faster someone is driving, the less time they have to stop if something unexpected happens.
"Speed limits are there for a reason - stick to them."