Amtrak workers continue ongoing infrastructure renewal work beneath Penn Station in New York on July 9, 2017. (Kathy Willens/AP)

Regarding the Feb. 12 PowerPost article “Trump’s infrastructure plan already faces roadblocks”:

As President Trump turns his attention to infrastructure and transportation spending this week, it is time to consider raising the federal gasoline tax, a much-needed funding source. The tax was last increased in 1993 and has been stuck at 18.4 cent s per gallon since.

The president’s transportation plans are ambitious, and it is not entirely clear how they will be funded. The advantage of the gas tax is that the mechanisms are already in place for collecting it. Gasoline-powered cars and trucks still make up the vast majority of vehicles on our highways and will for some time.

If the gas tax is not increased, the Highway Trust Fund will continue to be underfunded, and transfers will be made into the trust fund from general revenue. That’s not the way it was supposed to work.

John A. Boffa, Washington