A driver was caught doing nearly twice the limit on a 40mph road during a campaign to tackle speeding in the county.
Northants Police took part in a speed enforcement campaign last week to promote safer driving, including carrying out a speed enforcement operation across the county.
Officers processed 460 speeding offences during the week, and community speed watch volunteers sent out 174 warning letters to speeding motorists.
In addition PCSOs sent out a further 14 warning letters.
Officers detected additional motoring offences, including texting while driving, illegal tyres, illegal number plates and no insurance, tax or MOT.
Officers and staff focused on 24 locations across the county, using a mobile speed indicator device.
The highest recorded differential in speed was 78mph in a 40mph limit.
Superintendent Andy Cox, head of specialist operations, said: “Last week’s campaign reassured the public that we are taking positive steps to tackle speeding and make our roads safer.
“Motorists were given a very clear message that only those who drive safely and lawfully are welcome on our roads.
“Driving too fast for the road or weather conditions is the single biggest factor in fatal crashes, followed by drink driving and failure to wear seat belts.
“We regularly target all three as part of our commitment to reducing casualties and we fully support an ongoing programme of ‘anywhere, anytime’ speed enforcement.”
The week was part of a Europe-wide speed enforcement campaign to promote safer driving.