A mobility scooter rider doing 8mph on a busy main road gave police the slip.
Motorists were stunned as a man pootled along on the electric buggy.
Despite drivers beeping their horns and shouting for the man to get off the road he continued travelling causing lengthy tailbacks.
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Police were inundated with 999 calls from concerned motorists on the A14.
The scooter driver entered the eastbound carriageway at junction 4 of the A14 at Rothwell, close to Kettering, Northants, and carried on for around three miles.
Police caught up with the scooter as it left at junction seven.
But the man refused to stop, instead turning around and travelling in the opposite direction against the flow of traffic.
Officers were unable to follow for safety reasons and the rider then made-off before they could catch-up with him again.
A spokesperson for Northants Police said: “Behaviour like this risks the safety of everyone.
“If you witness someone doing this, please call 999 immediately.”
Officers are appealing for anyone with information or dash-cam footage to contact them.
Witnesses were stunned as reported by Need To Know.
One said: “He was going from one lane to the other on his mobility scooter.
“He got to junction seven on the A14.
“The police tried to stop him.
“But de did a U-turn and drove towards oncoming traffic.
“It was very crazy.
“He brought lorries to a standstill.
“He was on the A14 for about half an hour.”
Another added: “I saw him and I could see the queue of traffic.
“I was heading in the other direction and wondered what was going on and couldn’t believe it when I saw it was someone on a mobility scooter.
“Crazy when there is a pathway he could be using alongside that stretch of busy road.”
Another added: “He sounds like a real life Father Jack from Father Ted.”
While another chimed in: “We saw him getting on from the slip road at Rothwell.
“It’s a wonder he wasn’t killed then.”
While there is no legal prohibition of Class-3 mobility scooters on dual carriageways there must be an amber flashing light mounted on the vehicle and their use on roads with a speed limit of above 50mph is strongly discouraged.
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