Revenues from the increased tolls are being used to pay for the Silver Line.
The incident occurred just before 11 a.m. near Baltimore.
Chicago police are investigating reports of issues with the vehicles.
Metro's new safety oversight board said it is looking into the incident.
The additional Acela service is scheduled to begin May 4.
The structures that support the Dulles Airport Metro station’s glass wall are cracked and lack proper reinforcement.
“For Boeing, safety features that could have saved 346 lives on two of their 737 Max 8s were yet another profit center, deemed optional like premium seats, extra bathrooms, or fancy lighting,” Sen. Edward J. Markey (D-Mass.) said.
The suit is one of several expected in the aftermath of the Ethiopian Airlines crash.
On the same day that Ethiopian officials released a preliminary report in the deadly March 10 crash, Boeing officials acknowledged that additional software updates will be needed.
The Gulfstream jet apparently blew out two tires as it took off from New Jersey's Teterboro Airport.