The Park and Ride car park has 350 spaces
The new Park and Ride at Junction 14 of the M1 opens on Saturday November 27.
The site has 350 spaces and planners hope drivers visiting Milton Keynes via Junction 14 will now park and complete their journey into the city centre by bus.
Park and Ride users will also be able to access facilities in the Coachway building when it opens to the public on December 11.
service will link the Park and Ride with the city centre.
The service will then go on to Milton Keynes Central Station, departing every 20 minutes during the day Monday to Saturday and every 30 minutes on Sunday.
Councillor Vanessa McPake, cabinet member for Transport, said: "I am delighted to announce the opening of the Park and Ride site which will provide easy and convenient access to the city centre.
"The new facility will help ease traffic in the city centre not just during the busy Christmas period but all year round."
Parking at the Park and Ride is free with a special return fare on service 300 of £2 for passengers boarding at the site. Each adult fare-payer can take one accompanied child, age 15 or under, free of charge.