The Park & Ride service from uphill Lincoln took 30,000 people on journeys and out of the city in its first year of operation.
Park & Ride engines started for the first time from Waitrose on Nettleham Road on February 20, 2017.
Passengers can park for free at the supermarket before hopping on a bus into the city centre for £2.50 (accompanied children travel free and concessionary bus pass holders ride free on weekdays).
The bus stops at Lincoln Cathedral and Broadgate on its way to and from the new Lincoln Central bus station.
It runs every 15 minutes from 6.50am on Mondays to Fridays, and 8am on Saturdays, with the last bus leaving the city centre at 6.20pm. There is no Sunday service.
Lincoln Business Support Manager Richard Baxter said: “We are delighted with the first-year take-up of the Park & Ride Service, which is being used by a wide variety of people.
“However, we are convinced that there are many more, who travel from the North and North-East of Lincoln to work in the city, who could benefit from this service, and we have a monthly deal available for those users.
“We are encouraging commuters who travel into Lincoln and who find it convenient to park at Waitrose, to use our monthly Inner Lincoln Bus Pass deal. This costs just £29, so it means that they can effectively use Park & Ride for less than a £1 a day.”