US · FMCSA ACTIVE AUTHORITY INSURED
KELLER TRANSPORTATION INC
dba KELLER BUS SERVICE
Waldorf, MD 20601 · DOT 32700 · MC119262
Company profile
Web-discovered · as of 2026-07-30
Passenger transport carrier providing charter bus services, school bus transportation for Charles County, and MTA commuter routes from Southern MD to Washington D.C. Operates a fleet of motor coaches and school buses under the dba Keller Bus Service.
Fleet use
Passenger transport
Operating scope
Regional
Service model
scheduled route, passenger charter
Equipment
coach, bus
Ownership
Private
Employees
51-200
HQ · 4472 Gallant Green Rd., Waldorf, MD 20601
Active FMCSA record (07/2026), updated YELP/Maryland Bus Companies listing (07/2026).
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
99
power units · corroborated
Activity
passenger transport
for hire licence
In operation since
1974
64 drivers
US compliance
Source FMCSA L&I / SAFER · as of 2026-07-12
Operating authority
Active
Insurance on file
Yes (BIPD)
Lancer Insurance Company · $5,000,000
Out of service
No
Safety rating
SATISFACTORY
Crashes (24 mo)
1
0 fatal · 6 injured
Data Services
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