Developer Resources

CMRT provides open data in General Transit Feed Specification (GTFS) format for several transit providers in Maryland. 

Disclaimer Agreement

Disclaimer and Liability Statement: Data is provided on an “AS IS” basis. Central Maryland Regional Transit (CMRT) specifically disclaims any warranty, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular use. The entire risk as to quality and performance is with the user. In no event will CMRT or its staff be liable for any direct, indirect, incidental, special, consequential, or other damages, including loss of profit, arising out of the use of this data even if CMRT has been advised of the possibility of such damages. CMRT may update, modify, or revise the data in this site at any time, without notice. Additionally, when using CMRT data or software in projects, maps, etc.; you agree to acknowledge CMRT as a data source. By downloading any of the files below, you agree to this agreement.

General Transit Feed Specification (GTFS)

TRIP publishes GTFS feeds for use in Google Maps, but encourages third-party developers to utilize the feeds in other web and smartphone applications.