New York Gov. Andrew Cuomo said a program charging motorists congestion-pricing fees to enter Manhattan may be delayed indefinitely because the federal government has been slow to approve it.

Tolls on motorists entering midtown Manhattan promise to alter everyday life for millions of people in the most populous U.S. city. Yet with the fees slated to begin in a year, the panel empowered to set pricing and other policies has yet to be created.

New York’s congestion pricing plan should include fees on motorists both entering and leaving midtown Manhattan, as well as variable rates linked to peak and off-peak hours to encourage commuters to choose the least busy times to travel, a transportation group recommended.

In an 18-month experiment, the city plans to limit car and truck traffic from a six-block stretch of the road, establishing a corridor featuring express buses, wide bike lanes and pedestrian-friendly walkways. The bus service will start in June.

New York lawmakers facing an April 1 deadline to approve a state budget have agreed to impose tolls upon motorists who enter midtown Manhattan, but they still must decide on politically fraught issues over who gets to be exempt.

Commuters driving into Manhattan’s most congested areas would have to pay an $11.52 daily fee under a proposal from a panel created by Governor Andrew Cuomo. Trucks would pay $25.34, while taxis and for-hire vehicles would pay $2 to $5 per ride.

Gov. Andrew Cuomo is accelerating construction on New York bridges and tunnels so the work is complete before Amtrak begins emergency repairs at Pennsylvania Station in July.