Today's transportation is mainly driven by fossil fuels. The reason is the ease of use and the existence of mature technology utilizing this fuel source. Fossil fuels are relatively compact energy sources that are concentrated. The disadvantage is that they are heavily polluted and rely on limited natural resources. There are many proposals on the use of renewable energy, more efficient use of fossil fuels, or the use of people and parts to move people and things.
The list below contains some less common transportation methods, but in the future it is considered to be possible.
Bimodal Glideway (double mode transportation system) trip (William D. Davis, Jr., announced in 1967)
At first glance, the proposal by President Trump 's "slim budget" seems to be very bad for transportation, especially for transportation. It is natural that a reduction of 2.4 billion dollars is expected due to the reduction of the Ministry of Transport, so it has been criticized about how the budget will affect the nation's transportation agencies. But the background is key. The $ 2.4 billion reduction proposed by Mr. Trump does not affect most federal funds received by state and municipalities - it does not mention funds based on demographics or other factors. The vast majority of the Federal Transport Budget comes from the Highway Trust Fund, another $ 60 billion in funding from the Federal Fuel Tax through the 2015 FAST Act, which will be available by 2020. About US $ 10 billion is transportation expenses of $ 60 billion, the rest are roads and bridges. Most of the funds are used to maintain existing systems
In the trump budget bill, public transportation is not on the list of public industries considered infrastructure. Specifically, the plan defines the infrastructure as "ground transportation, airports, waterways, ports, drinking and drainage, broadband, and important federal facilities." In other words, public transportation will compete with funds, water systems, energy, broadband projects, even schools and established hospitals. There is also an indication that the Congress wants to sell the passage of the Road Trust Fund, which is the main source of the Federal Transport Fund. Since 2012, the Republican platform is proposing to cancel the highway trust transit service. "A quarter of the money is used for public transportation.