A driver found guilty of tailgating has been fined £900 and banned from driving for 12 months.
Businessman Dinesh Sharma was spotted closely following other vehicles, undertaking and driving in a generally aggressive manner on the A11 outside Norwich, in March last year.
He had been driving home from picking his daughter up from university and was apparently in rather a hurry, Norwich Crown Court heard.
Guy Ayers, prosecuting, said: "This defendant appeared to be in a hurry and started to tailgate people in the overtaking lane, coming up fast behind them," EDP24.co.uk reported.
Despite other road users travelling at the speed limit, Sharma continued to gesture and drive in an intimidating manner in an attempt to get them out of his way.
Sharma's driving was so reckless that two motorists rang the police to report him, including an off-duty police officer, who noted his car's registration number.
The Harpenden resident admitted dangerous driving and was fined £900 and ordered to pay £600 costs. He was also banned from driving for a year and will have to sit an extended driving test should he want to get his licence back.
Passing sentence, Recorder Rupert Lowe said: "You were in a hurry and in a temper. It was dangerous.
"It is a serious offence. It was persistent and it was angry and it was plainly dangerous."
Sharma's legal representative, Jude Durr, in mitigation said that there was no collision or injury resulting from his driving and that his conduct that day was "wholly out of character".