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Table 1. Passenger-Moving Efficiencies Of Different Human
Transportation Modes, In Passenger-km/megajoule:
Human on bicycle 18.0 pass-km/MJ
Human walking 5.0
Intercity railroad train 1.7
Urban bus 0.9
Carpool auto (occupancy=4) 0.7
Commercial airplane 0.4
Commuting auto (av occ=1.15) 0.2