Factors

Automated Highways

Dualmode Guideways

Time to complete

10 years minimum

20 years or more

Cost of Guideways

High

Higher

Cost of Vehicles

High

Higher

Average Speed

Perhaps 60 mph

200 mph, or more

Space between cars

13 feet

About 1 foot

Capacity per lane

11,300 cars per hour

66,000 cars per hour

Safety

Perhaps better than highways

Far better than highways

Power source

Fossil fuel

Electricity

Environmental