What is a USDOT number?

The U.S. Department of Transportation number identifies a company that operates commercial vehicles hauling cargo or passengers in interstate commerce, and in many states for trips within the state too.

An MC (motor carrier) number is the operating authority FMCSA grants to for-hire carriers that move regulated goods or passengers across state lines. Private carriers hauling their own goods do not need one.

What do the safety ratings mean?

FMCSA rates a carrier Satisfactory, Conditional or Unsatisfactory after an on-site compliance review. Most carriers have never had a review and are unrated, which does not mean they are unsafe.

Checked Oct 26, 2026

Trucking Companies in Maryland

Active motor carriers whose principal place of business is in Maryland.

Active carriers: 44,301
Power units: 141,725; Trucks and tractors reported
Drivers: 150,602
Interstate carriers: 18,015

Carriers in Maryland

Share of active carriers

For hire (carry goods for others)21,60348.8%
Private (carry their own goods)26,34359.5%
Passenger carriers1,8354.1%
Hazardous materials4,4079.9%

Fleet size (power units)

None reported3,3357.5%
124,03054.2%
2 to 513,15629.7%
6 to 102,0344.6%
11 to 501,5093.4%
51 to 1001420.3%
More than 100950.2%

Fleet and driver counts are self-reported by each company on FMCSA Form MCS-150 and can be out of date. Values that look like typing errors (for example 99,999 trucks for a small company) are treated as not reported. Pages list companies registered as businesses; owner-operators registered as individuals are counted in totals but not named.

Largest carriers in Maryland

Swipe the table sideways to see more columns.

#	Company	Base	Power units	Drivers	Type
1	Cowan Systems LLCUSDOT 548880	Baltimore, MD	1,882	1,882	For hire
2	Williams Scotsman IncUSDOT 350040	Baltimore, MD	1,426	1,120	For hire
3	Faster IncUSDOT 3004376	Brentwwod, MD	1,392	1,000	For hire
4	Thompsongas LLCUSDOT 2812287	Frederick, MD	1,210	787	For hire
5	Chaney Materials LLCUSDOT 186407	Annapolis, MD	964	685	Private
6	Landcare USA LLCUSDOT 867467	Frederick, MD	940	952	Passenger
7	Baltimore Gas & Electric CoUSDOT 160257	Baltimore, MD	688	1,063	Passenger
8	Apex Companies LLCUSDOT 1259442	Rockville, MD	604	1,112	Private
9	R E Michel CompanyUSDOT 261956	Glen Burnie, MD	578	742	Private
10	Griffith Energy Services IncUSDOT 910045	Columbia, MD	528	152	Private
11	Ruppert Landscape IncUSDOT 848269	Laytonsville, MD	480	595	Private
12	Sodexo Operations LLCUSDOT 4429105	North Bethesda, MD	409	409	Private
13	Dxi Construction Co IncUSDOT 372309	Churchville, MD	395	60	Private
14	Enterprise Rac Company of Maryland LLCUSDOT 1880016	Rockville, MD	370	75	Passenger
15	Waste Management of Maryland IncUSDOT 334445	Baltimore, MD	333	324	Private
16	1920 Transport LLCUSDOT 2109662	Salisbury, MD	307	303	Private
17	PJK Food Service LLCUSDOT 6292861	Landover, MD	299	300	Private
18	Allcar Leasing IncUSDOT 400335	Laurel, MD	297	50	For hire
19	Perdue Transportation IncorporatedUSDOT 204935	Salisbury, MD	289	314	For hire
20	D M Bowman IncUSDOT 135530	Williamsport, MD	265	244	For hire
21	PJK Food Service CorporationUSDOT 404782	Landover, MD	253	135	Private
22	Alfa To Omega LLCUSDOT 3783334	Pikesville, MD	253	255	For hire
23	Schuster Concrete Ready Mix LLCUSDOT 2570926	Owings Mills, MD	243	282	Private
24	Cowan Intermodal Group LLCUSDOT 215194	Baltimore, MD	239	226	For hire
25	Lightning Transportation IncUSDOT 326966	Hagerstown, MD	230	230	For hire
26	The Potomac Edison CompanyUSDOT 7527	Williamsport, MD	225	264	Private
27	Enterprise Rac Company of Baltimore LLCUSDOT 1639678	Linthicum, MD	225	23	Private
28	Coastal Sunbelt Produce LLC and the Coastal Companies and Coastal Acquisition CorporationUSDOT 463498	Laurel, MD	215	186	For hire
29	Quest Transport LLCUSDOT 1425906	Baltimore, MD	212	129	For hire
30	Communications Construction Group LLCUSDOT 546919	Rising Sun, MD	204	208	Private
31	Gray & Son IncUSDOT 988991	Timonium, MD	204	136	Private
32	Aui IncUSDOT 2021768	Elkton, MD	202	235	Passenger
33	Naqel Transport and Investment Barter CompanyUSDOT 2006752	Amman, MD	200	200	For hire
34	Woodlawn Motor Coach IncUSDOT 270798	Baltimore, MD	198	208	For hire
35	Smith Bus Service IncUSDOT 580046	Odenton, MD	185	178	For hire
36	Bates Trucking Co IncUSDOT 653767	Bladensburg, MD	172	142	Private
37	Roy Jorgensen Associates IncUSDOT 530034	Buckeystown, MD	164	620	For hire
38	Tri-Gas & Oil Company IncUSDOT 7750	Federalsburg, MD	162	205	For hire
39	Kci Technologies IncUSDOT 1027676	Sparks, MD	158	144	Private
40	Beynon Sports Surfaces IncUSDOT 1037164	Cockeysville, MD	158	158	Private
41	Capital Lighting and Supply IncUSDOT 341782	Upper Marlboro, MD	155	152	Passenger
42	Canada Dry Potomac CorpUSDOT 32178	Landover, MD	154	138	Private
43	Allan Myers MD IncUSDOT 273092	Fallston, MD	151	142	Private
44	Sysco Baltimore LLCUSDOT 172924	Jessup, MD	148	154	For hire
45	W a Chester LLCUSDOT 446723	Lanham, MD	148	104	Private
46	National Delivery Systems IncUSDOT 966390	Elkridge, MD	147	136	For hire
47	MTS Express LLCUSDOT 1140957	Baltimore, MD	145	80	For hire
48	Alban Tractor LLCUSDOT 122618	Baltimore, MD	140	131	Private
49	Interior Specialists IncUSDOT 1031324	White Marsh, MD	138	107	Passenger
50	Keller North America IncUSDOT 200526	Hanover, MD	137	47	Private
51	Cockey's Enterprises IncUSDOT 550731	Baltimore, MD	135	120	For hire
52	Lift Off Distribution LLCUSDOT 1201792	Columbia, MD	135	135	Private
53	Mission BBQ Management LLCUSDOT 2505745	Glen Burnie, MD	135	130	Private
54	John W Brawner Contracting Co IncUSDOT 538385	Hunt Valley, MD	134	101	Private
55	MTS Transport LLCUSDOT 2029816	Baltimore, MD	134	45	For hire
56	CJ Miller LLCUSDOT 335900	Hampstead, MD	131	245	For hire
57	Errands Plus IncUSDOT 1424655	Rockville, MD	131	166	For hire
58	Baltimore Tank Lines LLCUSDOT 84666	Glen Burnie, MD	130	130	For hire
59	MBG Enterprises IncUSDOT 1126119	Harmans, MD	130	80	For hire
60	Environmental Alternatives LLCUSDOT 1289796	Clarksburg, MD	130	130	Private
61	Tecta America East LLCUSDOT 1497382	Jessup, MD	129	79	Private
62	Reliable Contracting Co IncUSDOT 1018322	Gambrills, MD	128	201	Private
63	Vermeer Mid Atlantic LLCUSDOT 2871837	Annapolis JCT, MD	128	140	Private
64	Allied Drilling LLCUSDOT 1064198	Laurel, MD	127	119	Private
65	Giant of Maryland LLCUSDOT 110018	Jessup, MD	121	282	For hire
66	Chesapeake Charter IncUSDOT 350703	Annapolis, MD	121	145	For hire
67	Dillons Bus Lines LLCUSDOT 4259861	Hanover, MD	121	114	For hire
68	Atlantic Tractor LLCUSDOT 173187	Salisbury, MD	120	138	Private
69	Mint Express IncUSDOT 2779557	Frederick, MD	120	60	For hire
70	MBB Delivery LLCUSDOT 3463407	Kensington, MD	119	250	For hire
71	Unity Disposal & Recycling LLCUSDOT 672770	Laurel, MD	118	118	For hire
72	Capital Shipping LLCUSDOT 3702263	Beltsville, MD	116	202	For hire
73	Fidelity Engineering LLCUSDOT 887140	Sparks, MD	114	307	Private
74	Sysco Eastern Maryland LLCUSDOT 226969	Pocomoke, MD	112	122	For hire
75	Annapolis Bus Company IncUSDOT 122651	Annapolis, MD	111	94	Passenger
76	The Chefs' Warehouse Mid-Atlantic LLCUSDOT 1421872	Hanover, MD	109	50	For hire
77	M T Laney Co IncUSDOT 1049085	Eldersburg, MD	108	124	Private
78	DD&s Express IncUSDOT 361802	Annapolis, MD	105	105	For hire
79	Neff and Son IncUSDOT 791669	Chestertown, MD	105	102	Private
80	6ix Aces Trucking LLCUSDOT 3618371	Severn, MD	105	105	For hire
81	Traffic Engineering Services De LLCUSDOT 4123317	Elkridge, MD	105	42	Private
82	Keller Transportation IncUSDOT 32700	Waldorf, MD	104	70	For hire
83	Cloverland Dairy L PUSDOT 65287	Baltimore, MD	104	120	Private
84	Concrete General IncUSDOT 362184	Gaithersburg, MD	104	106	Private
85	Pillar Innovations LLCUSDOT 1627465	Grantsville, MD	104	106	For hire
86	Francis O Day Co IncUSDOT 286446	Rockville, MD	100	30	Private
87	Choptank Electric CooperativeUSDOT 326258	Denton, MD	100	101	Private
88	Solutions Transport LLCUSDOT 334544	Baltimore, MD	100	88	For hire
89	Curtis Bay Energy IncUSDOT 1692213	Baltimore, MD	100	67	Private
90	Lonergans Charter Service IncUSDOT 84782	Millersville, MD	99	106	For hire
91	The Winner Distributing CoUSDOT 7027	Baltimore, MD	98	62	Private
92	Carroll Independent Fuel LLCUSDOT 336632	Sparks Glencoe, MD	98	94	For hire
93	Donald B Rice Tire Co IncUSDOT 343695	Frederick, MD	97	97	Private
94	H&s Distribution LLCUSDOT 3088514	Baltimore, MD	97	97	Private
95	Chapel Valley Landscape CompanyUSDOT 337851	Woodbine, MD	96	150	Passenger
96	Seh Excavating IncUSDOT 738925	Finksburg, MD	96	101	Private
97	Dixie Land Energy LLCUSDOT 1077035	Rising Sun, MD	96	77	For hire
98	Thomas Bennett & Hunter IncUSDOT 65131	Westminster, MD	95	99	Private
99	Long Fence Company IncUSDOT 223107	Capitol Heights, MD	93	72	Private
100	Synagro Central LLCUSDOT 629180	Baltimore, MD	93	88	For hire

Show all 100Show fewer

By county

Swipe the table sideways to see more columns.

County	Carriers	Power units	Drivers
Prince George's County	7,668	22,243	23,750
Baltimore County	5,732	19,649	21,751
Montgomery County	4,964	14,420	16,124
Anne Arundel County	4,811	17,053	17,656
Baltimore city	3,018	10,496	11,856
Frederick County	2,348	9,209	9,162
Carroll County	1,961	6,042	6,216
Harford County	1,922	5,618	6,015
Howard County	1,832	7,571	7,727
Charles County	1,389	3,186	3,628
Washington County	1,271	4,308	4,499
St. Mary's County	983	2,336	2,400
Wicomico County	870	3,074	3,206
Calvert County	765	1,926	1,996
Cecil County	703	2,325	2,469
Queen Anne's County	677	1,685	1,832
Talbot County	602	1,731	1,766
Caroline County	581	1,925	1,782
Dorchester County	491	1,179	1,228
Worcester County	446	1,998	1,709
Allegany County	393	1,019	1,030
Garrett County	383	1,292	1,322
Kent County	320	998	1,043
Somerset County	169	439	430

Frequently asked questions

What is a USDOT number?: The U.S. Department of Transportation number identifies a company that operates commercial vehicles hauling cargo or passengers in interstate commerce, and in many states for trips within the state too.
What is a MC number?: An MC (motor carrier) number is the operating authority FMCSA grants to for-hire carriers that move regulated goods or passengers across state lines. Private carriers hauling their own goods do not need one.
What do the safety ratings mean?: FMCSA rates a carrier Satisfactory, Conditional or Unsatisfactory after an on-site compliance review. Most carriers have never had a review and are unrated, which does not mean they are unsafe.

Source: Federal Motor Carrier Safety Administration, Company Census File · Last updated 10/22/2026

Data sources

Company Census File (motor carriers)Federal Motor Carrier Safety Administration

Data as of 10/22/2026

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