Beginning in 1921, intrastate bus service was regulated by the Connecticut Public Utilities Commission. Because Connecticut is a small densely populated state, bus service generally is of a more local nature. The Connecticut Co. provided local streetcar and interurban railway service throughout much of the state, replaced with buses mostly during the 1930's and 1940's. And was the main predecessor to the state owned Connecticut Transit.
The earliest bus services were actually jitney operations. These jitney companies were listed in the 1923 Annual Report, as having certificates for operation. Missing certificate numbers represent certificates surrendered or revoked. Some of these routes eventually evolved to routes presently under the jurisdiction of Connecticut Transit.
Certificate To Whom Route No. Issued 1 T. J. Fenaughty Danbury-NY State Line 2 David S. Rich Danbury-Richfield 3 The E. J. Kelly Co. Litchfield-Torrington 4 Patrick Donnelly Torrington Local 5 A. Passalacqua Thompsonville-MA State Line 7 Lyons Auto Co. Thomaston-Torrington 8 Lyons & Lyons Terryville-Thomaston 9 Congress Taxi Co. Bridgeport-Danbury 10 P. A. Agostini New Britain Local (Arch St. Line) 11 Mrs. Helen Muter New Britain Local (Stanley St. Line) 12 J. T. Breen Hartford-Willimantic 13 J. Behan Middletown-Saybrook 14 M. Baldelli New London-Niantic 15 Goodyear Cotton Mills Dayville-Goodyear 16 M. Baldelli New London-Sub Base 17 S. Toth & Son Collinsville-Unionville 18 Waterbury Jitney & Taxi Co. New Haven-Saybrook 19 C. L. Waters High Ridge-Stamford 20 R. S. Elzea Cranbury-Norwalk 21 S. W. Miller Long Ridge-Stamford 22 L. Noruszewicz Waterbury Local 23 Winsted-Hartford Jitney Association Hartford-Winsted 24 Bunker Hill Trans. Co. Waterbury Local 25 Storrs Garage Storrs-Willimantic 26 Waterbury Jitneys & Taxis New Haven-Bethany-Waterbury 27 Ernest Nyquist New Britain Local (E. Main St. Line) 28 Orange Street Bus Line New Britain Local (Orange St. Line) 30 Willimantic-Hartford Jitney Association Hartford-Willimantic 98 C. H. Randall Bridgeport-Long Hill-Monroe 100 F. Chardas Bridgeport-Huntington Town Line 102 Leo N. Potvin Moosup-Plainfield 105 Northeastern Transportation Co. Waterbury Local (E. Main St. Line) 107 H. J. Barnett Danielson-Willimantic 108 W. C. Brown Canaan-MA State Line 109 Affron & Walker Canaan-Winsted 111 Bridgeport-Waterbury Passenger Service Bridgeport-Waterbury 113 M. Baldelli Norwich-Sub Base 115 T. E. Wagner New Britain Local 117 Nick Mooney Norwich-Pawcatuck 118 Central Bus Corp. Bridgeport Local (Routes E and M) 119 C. C. Wells Bridgeport-Trumbull 120 J. Dececca Banksville-Greenwich 123 C. H. Abbey Riversville-NY State Line 124 Bunker Hill Trans. Co. Litchfield-Waterbury 126 L. LeClair Naugatuck Local 129 Connecticut Motor Trans. Co. Hartford-Colchester-New London 130 D. Waluk New Britain Local 131 Willimantic & Stafford Springs B&W Stafford Springs-Willimantic 136 D. S. Rich New Canaan-Ridgefield 137 G. J. Gary Staffordville-Stafford Springs 141 T. L. Haynes New London-Sound View 146 Gray Line Bus Corp. D, D-1 and M-2, Bridgeport 147 Bridgeport Auto Transit Co. B-Barnum Ave., Bridgeport 148 White Line Bus Corp. C and C-1, North Main, Bridgeport 149 L. J. Ackerman Greenwich-Round Hill 150 The Blue Ribbon Line Moosup-RI State Line 151 Beatrice I. Coyle Meadows End-Merwin's Point 152 H. J. Barnett Danielson-RI State Line 153 Connecticut Motor Truck Co. Colchester-Norwich 154 Edward W. Markham East Hampton-Marlboro 155 A. L. Hugins Canaan-Millerton, NY State Line 157 John B. Ethridge Eastford-Willimantic