Bananas for Scale
San Francisco Cable Car

Photo from Wikimedia Commons

San Francisco Cable Car

The beloved grip-and-cable streetcar climbing steep hills since 1873/Transportation

San Francisco's cable cars are the last manually operated cable car system in the world and a National Historic Landmark. Andrew Hallidie's invention uses a continuously moving underground cable at 15.5 km/h, which the gripman grasps to pull the car along. A cable car is about 9 m long, 2.4 m wide, and weighs approximately 7,700 kg empty. The system includes three routes, 73 operational cars, and 600-volt electric motors powering the cables from a central powerhouse. About 7 million riders use the system annually.

Measurements

Car length9 m
425 billionthsGreat Walls of China
20.2 millionthsGrand Canyon lengths
30Wine bottle heights

Standard grip car

Car width2.4 m
1Corn stalk height
271 millionthsMount Everests

Including running boards

Car height3.2 m
2.13Hockey sticks
1.75Dining table lengths
7.2 millionthsGrand Canyon lengths

Rail to roof peak

Empty mass7,700 kg
2.85Blue whale tongues
669,565AAA batteries
7.7 quadrillionSkin cells

Without passengers

Cable speed4.3 m/s
1.2 hundredths9mm bullets
4.1 tenthsUsain Bolts
1.43Running toddlers

Constant 15.5 km/h

Cable diameter3.2 hundredths m
13.3 billionElectron wavelengths
16Ant body lengths
84,211Violet light wavelengths

1.25-inch steel cable

Browse more in Transportation