Web: howardtransit.com 
Howard Transit  provides fixed route bus service in Columbia, Ellicott City and Clarksville. Service is also available to BWI Marshall Airport and to employment centers along US 1 in Howard County. Most routes operate Monday through Saturday with service available to BWI Marshall Airport seven days per week.
Silver Route - Columbia Mall/BWI Light Rail Station
Columbia Mall, BWI MARC/Amtrak Station
Snowden Square, BWI Marshall Airport Terminal
Maryland Food Center, MTA Light Rail Stations
For information go to www.howardtransit.com  or call Howard Transit customer service at 800-270-9553.