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Figure 5: Time-area requirements by mode
Figure 5: Time-area requirements by mode (Litman, 2020, p.11 based on Bruun and Vuchic analysis, 1995)
Mode Average Speed
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Standing Area Miles/Hr Ft 2 Moving Area Ft 2 Travel Area Parking Area Total Area
Ft 2 Minutes/Mile Ft 2 Minutes/Mile Ft 2 Minutes/Mile
Walking 3 10 30 400
Cycling
10 20 100 400 Bus Transit 15 20 20 53 -
400 960 1,360 - 53
Solo Driving (Arterial) Solo Driving (Highway) 20 100 300 600 2,400 3,000
60 200 3,000 2,000 1,600 3,600
In their Transit Street Design Guide, the National Association of City Transportation Officials, NACTO, present a more inclusive method of gauging road capacity and performance. By measuring the throughput of people and accounting for the social, cultural, and economic activities served by transit, walking, and bicycling, it becomes clear that transit, walking and cycling substantially increase capacity of many types of roads that can aid in shifting modes and reducing road expansion (2016).
Figure 6: Designing to move people: The capacity of a single 10-foot lane (or equivalent width) by mode at peak conditions with normal operations (NACTO, 2016)
