General Motors TDH-4507

GMC TDH-4507
Years of manufacture	1946 to 1949
Length	35 feet
Width	96 inches
Power/Fuel	Diesel

The General Motors TDH-4507 was a 35 foot Old Look transit bus built from 1946 to 1949 in the United States. There were several new features on the 4507 including a Thermo-Matic heating and ventilation system, use of insulated rear engine hatches to reduce noise, and a passenger activated treadle step rear door.

3045 units were built in total.

Specifications

Engine

• Detroit Diesel 6-71

Transmission

• Spicer

Operators

Canada

• Toronto Transportation Commission - Toronto, ON

United States

• Baltimore and Annapolis Railroad - Glen Burnie, MD
• Baltimore Transit Company - Baltimore, MD
• Chicago and Calumet District Transit Company - Hammond, IN
• Chicago Motor Coach - Chicago, IL
• Chicago Surface Lines - Chicago, IL
• Chicago Transit Authority - Chicago, IL
• DeCamp Bus Lines - Montclair, NJ
• Des Moines Transit Company - Des Moines, IA
• Green Bus Lines - Jamaica, NY
• Houston Transit Company - Houston, TX
• Iowa Regional Transit Corporation - Des Moines, IA
• Leyden Motor Coach - Elmwood Park, IL
• Los Angeles Metropolitan Transit Authority - Los Angeles, CA
• Los Angeles Transit Lines - Los Angeles, CA
• Miami Transit Company - Miami, FL
• MTA Maryland - Baltimore, MD
• St. Louis Metro - St. Louis, MO
• St. Louis Public Service Company - St. Louis, MO
• South Suburban Safeway Lines - Harvey, IL
• TRANSPO - South Bend, IN
• Triboro Coach Corporation - Jackson Heights, NY
• Unitrans - Davis, CA
• Valley Transit - Appleton, WI
• Vandalia Bus Lines - Caseyville, IL
• Waukegan-North Chicago Transit Company - Waukegan, IL
• West Suburban Transit Lines - Lombard, IL

Preserved Coaches

Year	Thumbnail	Serial	Original Owner	Fleet Number	Current Owner
1947		675	Baltimore Transit Company	1426	K. Mueller
1947		1660	City of Bergen-Binnen	8	SVA in Holland

References

• OMOT's TDH-4507 U.S. Production List