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Ride On Flex - New Call Center Option 240-301-3842

Flex: Book and go!

Traveling in a Flex zone? Lucky you!

If your trip starts and ends within a single zone, Flex is a convenient new option for you and an incredible value. Welcome to transit on demand and a 2020 National Association of Counties (NACo) Innovation Award Winner.

The Zones


Mon-Fri, 9:00 a.m. to 3:30 p.m.

map of Rockville Zone

Text description of Rockville Zone


Mon-Fri, 6 to 9 a.m. & 3:30 to 7:00 p.m.

map of Glenmont/Wheaton Zone

Text description of Glenmont/Wheaton Zone

Video transcript | ver con subtitulos en español

How do I ride Flex?
  1. Download the Ride On Flex app for free from the Apple or Google store, or if no smartphone, contact the call center at 240-301-3842. Call Center hours are 6 am to 7 pm, Monday - Friday.  You must book rides only during the hours of operation in your selected zone.
  2. Download on the App Store Get it on Google Play
  3. Enter your pickup and drop off location within the zone, and book.
  4. Go to your pickup location.

Then pay as you board! See details for more important information before you book your first ride.

Video transcript| ver con subtitulos en español

Comments / questions

Flex Microtransit Performance Assessment Report

Need help, or have a comment?

Please visit our frequently asked questions (FAQ). If we haven’t answered your question, please contact us at, or call 311 (240-777-0311 outside the county). TTY (for hearing impaired): Maryland Relay 711.

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Connecting People and Places

To realize a future for Montgomery County that includes a first-rate, multi-modal transportation system, MCDOT is expanding choices for all the users of our network. The Ride On Flex represents the third tier of bus service in a four-tier plan.


Lose an item on a Ride On bus? Contact our Lost & Found.

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