Advocates and L train riders are calling for more transparency from the MTA ahead of the looming shutdown in 2019, saying hundreds of thousands of commuters will need an alternative when the subway service stops for repairs in April of 2019.

The commuters held a rally outside City Hall on Tuesday, demanding that transit officials sit with a community advisory board every month, beginning in January, to discuss plans for affected riders and neighborhood traffic.

"Our big concern is that we'll get the information too late and not have enough time to respond and see if we can modify it and enhance and make plans better," Brooklyn City Councilman Antonio Reynoso said. "We cannot get them at the last minute and accept it, or expect us to accept it."

In a statement, the city transportation department said it is working to improve communication with straphangers, saying there is still plenty of time before the closure goes into effect.