Lincolnshire County Council has decided on a location for a proposed park and ride scheme.
The authority has earmarked a site near the Carholme roundabout where the A46 Lincoln bypass joins the A57.
But officials have said it could still be another three years before it is up and running.
Chris Briggs, from the county council, said several sites had been looked at but the chosen location would attract the largest proportion of traffic.
"It's also a road that we think we can do things along that would make a park and ride bus get into town quicker," he said.
Mr Briggs added that once the initial scheme was set up, the authority may look at putting in more park and ride schemes at other locations in the city.
He said the plan was in its early stages, but it was expected the buses would run about every 10 minutes.
The scheme could also take tourists to Lincoln castle and cathedral.