Trucking was already entrenched as big business by the long list of companies operating within California in 1927. The industry was regulated by the state Railroad Commission. This following list shows all the trucking companies in California along ranked by revenues. The amounts are the actual revenues in 1927 dollars

United Parcel Service of Los Angeles, Inc. $519,550

Los Angeles and Santa Barbara Motor Express $384,980

Motor service Express, Inc. 292,734

Citizens Trucking Company. 287,383

Coast Truck Line 274,644

Interurban Express Company. 257,404

Pioneer Truck and Transfer Co. of Los Angeles 256,739

Merchants Express and Draying Company. 254,655

United Parcel Service San Francisco 250,516

City Transfer and Storage Company. 217,227

Pomona-Los Angeles Daily Transfer 206,031

Tolson Transportation System Inc. 198,879

Packard Trucking Company 196,240

Bekins Van Lines, Inc. 182,463

White Truck & Transfer Co Inc. 175,370

Boulevard Express, Inc. 168,639

Associated Transit Company. 160,639

Highway Transport Company. 147,813

Imperial Valley-Los Angeles Express. 143,076

Deysher and La Fargue. 130,285

Keystone Express 124,685

Triangle Orange County and Santa Ana Express 122,995

Bakersfield and Los Angeles Fast Freight. 121,530

Clark Brothers. 113,776

Los Angeles and San Pedro Transportation Co. 111,911

Lamb’s Transfer 108,272

Red Transfer, Interurban Freight & Express Line 99,535

Kellogg Express 93,383

Richards Trucking and Warehouse Company 91,031

Joseph Barrera 85,525

Consolidated Motor Freight Lines 83,391

Borderline Express, Inc. 83,657

RW Rasmussen 83,599

JA Clark Draying Company 82,831

Walter Wellhour 81,961

Los Angeles & West Side Transportation Co. Inc 80,832

Paul Kent Truck Company, Inc. 76,648

Ojai, Ventura and Los Angeles Express 72,897

Zimmerman Bros. 70,156

Los Angeles-Hynes Milk Truck 66,274

Marr Freight Transit Co. 65,811

R E Robson 63,342

A. Camillo & Sons 62,954

California Highway Express 57,383

Gilroy Express 57,829

Union Transfer Company 57,058

Ashton Truck Co. 56,705

Union Transfer & Storage Company 54,262

Misemer’s Motor Drayage 53,804

Sacramento-Auburn Freight Line 50,078

H C Venable 48,292

A J Happe Transfer Company 48,031

Pioneer Express Company 44,944

Belyea Truck Company 44,636

California Truck Company 43,355

Kiso Yasanga Produce Transfer Company 42,546

Los Angeles and Oxnard Daily Express 42,312

Victorville Motor Express 41:334

Wilmington Transfer & Storage Co Inc 41,057

FE and ME Penhall 40,807

Escondido Truck Line 39,668

Anderson Truck Service 39,310

Pacific Transportation Company 39,263

Lee B Hawkins 39,048

Oakland-San Jose Transportation Co Inc 38,134

Triangle Transfer & Storage Co 36,993

William Giacomasi 36,965

Independent Truck Company 32,836

Rice Transportation Company 31,703

Bisher’s Truck Line 31,310

Holmes Express 31,080

Valley And Coast Transit Co 29,086

Asbury Truck Company 28,497

HC Greve 27,288

Eureka-Garberville Truck Line 26,337

Manuel P Martin 25,881

T. Landi Drayage Company 25,809

Frank Atkinson 25,553

W and S Truck Company 24,440

A.B.C. Transportation System 24,362

Pacific Motor Express 22,849

El Dorado Motor Transportation Co. 22, 701

Los Angeles, Downey & Norwalk Transfer 21,033

Peoples Express Company 20,907

Pioneer Truck & Transfer 20,722

Caesar Pellegrini 20,195

Los Angeles & Blythe Truck Line 20,188

JB Grissel & Company 17,851

Oakland-San Jose Transportation Company 14,861

Al. G Witt 14,769

Pioneer Transfer Company 13,874

Besonse’s Motor Express 13,166

H. Campodonio Draying 11,925

Valley Truck & Transportation Company 9,880

RW Rasmussen Company Inc 9,525

Harbor Trucking Company 5,990

Anaheim Truck and Transfer 5,491

Pacific Transfer,Van & Truck Co, Inc. 3,115