In the United States it is cars for short distances, but planes for long distances.
Roads and Railroads
what is the primary responsibility of the secretary of transportation
It would probably car, trains?, buses, bikes, airplanes, and taxis.
{| |- | The primary means of transportation was water. Small boats and canoes were used to trave quickly between the settlements. Otherwise they walked. There were limited numbers of horses available. |}
Snowmachines
Jeepneys.
The primary source of transportation in the original Industrial Revolution was the train, drawn by a steam locomotive.
The primary mode of transportation in Seine is bicycles. As another primary mode of transport in Seine, there are metros. For moving around on the streets though, a bicycle is recommended.
Transportation barrier means transportation if barred - not allowed. Transportation corridor means transportation is allowed.
The primary means of transportation is through the blood stream.
The railroad became the primary mode of transportation
While there is not a dominant means of transportation in Bangkok, there are a few that are more popular than others. Some of these include, motorbikes (which are more popular than bicycles) and tuk-tuks (motorized three-wheeled vehicles). Public transportation such as buses and taxis are also prevalent, as is the use of private vehicles.