More than a dozen of Montgomery County’s Ride On bus routes are changing schedules and timetables next week. The changes, which will affect 13 routes beginning Sunday, impact service on weekday routes as well as weekend service.

Some of the changes:

Route 10: This bus and Metrobus C8 will run every 15 minutes. The C8 bus doesn’t run on Sundays, while route 10 runs every 30 minutes on Sundays.

Route 21: One trip was added in the morning.

Route 22: The schedule has been tweaked to reflect MARC train service.

Route 25: Buses will run every 15 minutes to ease crowding.

Route 37: Morning service from Potomac to Grosvenor has been altered and an extra trip added.

Route 45: Additional service has been added between Rockville and Twinbrook.

Additionally, schedules have changed for multiple routes so that the schedules actually show the real travel times for these routes.

● Weekday routes that are changing: 10, 14, 18, 20, 21, 22, 25, 26, 37, 45, 47 and 58.

● Saturday routes that are changing: 10, 14, 18, 20, 26, 41, 45 and 47.

● Sunday routes that are changing: 10, 18, 20, 26, 41 and 47

You can see a complete list of all of the timetables, including the updated routes, here.