Police waiting at temporary lights thought a Volvo must have gone through on red and pulled it over in Gull Lane, in Guyhirn.
Andrew Carr - a warehouse operative at Amazon in Peterborough at the time – gave a positive roadside breath test.
He was arrested and in custody blew 60 microgrammes of alcohol in 100 millilitres of breath; the legal limit being 35.
Appearing before magistrates in Peterborough on Monday, 51-year-old Carr pleaded guilty to drink-driving at about 8.15pm on March 16.
He was unrepresented in court and had written to the court to explain his situation, including the loss of his job.
Carr, of Lynn Road, Downham Market, was disqualified from driving for 16 months, which can be reduced with completion of a drink-driver rehabilitation course.
He was also fined £100 and ordered to pay £105 costs and £34 victim surcharge