A driver who phoned police to tell them another motorist was drunk after an accident “forgot” he was also over the limit.
Derbyshire Police said there had been a minor bump between two cars and one driver suspected the other was over the drink-drive limit.
But he forgot he had also been drinking, which officers spotted when they arrived at the scene.
The force was stunned following the incident at junction 25 of the M1 between Derby and Nottingham.
Both drivers were arrested on suspicion of drink-driving and have been charged.
“You couldn’t make this up”
The police said: “M1 J25. You couldn’t make this up. Very minor collision at the junction causing no damage.
“One driver suspects the other is drunk so quite rightly calls us, forgetting he is also drunk.
“Both arrested. One blew 40 and the other 78. Charged to court.”
The breath test limit is 35 microgrammes of alcohol per 100 millilitres of breath.
The incident happened on the A52 roundabout, beneath the M1, at 5.30pm on Sunday.
A Peugeot 207 and a Vauxhall Agila were involved in the collision.
A 60-year-old from Nottingham and a 46-year-old from Draycott, Derbyshire, were charged with drink driving.
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