<P> Plans for high - speed rail in the United States date back to the High Speed Ground Transportation Act of 1965 . Various state and federal proposals have followed . Despite being one of the world 's first countries to get high - speed trains ( the Metroliner service in 1969 ) , it failed to spread . Definitions of what constitutes high - speed rail vary , including a range of speeds over 110 miles per hour and dedicated rail lines . Inter-city rail in the United States with top speeds of 90 mph ( 145 km / h ) or more but below 125 mph ( 201 km / h ) is sometimes referred to as higher - speed rail . The Acela Express ( reaching 150 mph ) , the Northeast Regional and MARC Train ( both reaching 125 mph , although MARC only qualifies as such by its express trains ) are currently the only services in the country ( the Metroliner was discontinued in 2006 ) . </P>
<P> Plans for high - speed rail in the United States date back to the High Speed Ground Transportation Act of 1965 . Various state and federal proposals have followed . Despite being one of the world 's first countries to get high - speed trains ( the Metroliner service in 1969 ) , it failed to spread . Definitions of what constitutes high - speed rail vary , including a range of speeds over 110 miles per hour and dedicated rail lines . Inter-city rail in the United States with top speeds of 90 mph ( 145 km / h ) or more but below 125 mph ( 201 km / h ) is sometimes referred to as higher - speed rail . The Acela Express ( reaching 150 mph ) , the Northeast Regional and MARC Train ( both reaching 125 mph , although MARC only qualifies as such by its express trains ) are currently the only services in the country ( the Metroliner was discontinued in 2006 ) . </P>
what is the fastest train in the us
what is the fastest train in the us
The Acela Express
The Acela Express