Oxford City Council has taken over five city parking and riding sites to bring them all under one management system.
The city council took over the operational management (through its trading arm Oxford Direct Services) of Oxfordshire County Council's Thornhill and Oxford Parkway (formerly Water Eaton) park-and-ride sites.
Previously, the city council ran three park-and-ride sites at Redbridge, Seacourt and Pear Tree, while the county council ran those at Thornhill and Oxford Parkway.
It said drivers would now notice that all five sites would have ticket machines supplied by the same manufacturer for paying on the day. It will make it easy for them to use any of the five sites and pay in much the same way, regardless of the site they choose, adds the council.
The cashless system RingGo was also introduced in August to all park-and-ride sites to offer users more ways to pay.
Oxford Direct Service's Streetscene team is now responsible for cleaning the public buildings and will do so twice a day. In addition, the park-and-rides will be litter-picked three times a week.
The two councils will work together to make sure that the sites contribute to reducing congestion in the city by continuing to be an attractive option for people visiting and working in Oxford.
Simon Howick, managing director of Oxford Direct Services, said: "This initiative will create a single uniform park-and-ride service across the city, making the facilities easier to use and more attractive to visitors to Oxford.
"This change to the way the locations are operated aims to further reduce the number of vehicles that need to come into Oxford and so help reduce vehicle emissions in the city centre."