The officials who are overseeing congestion pricing in New York City on Wednesday provided details of their recommendations for how much drivers should pay to enter the busiest part of Manhattan and who should get discounts.

New York is expected to become the first city in the nation to implement congestion pricing as soon as next spring. The system will charge cars, buses, motorcycles and trucks a rate based on vehicle size and occupancy to drive into Manhattan on or below 60th Street, including popular tourist destinations like Times Square and busy shopping districts like Chelsea and SoHo.

The Franklin D. Roosevelt Drive, the West Side Highway and parts of the Hugh L. Carey Tunnel are excluded.

This is how the program is set to work, if it is approved by the board of the Metropolitan Transportation Authority early next year. The program still faces a legal challenge from the state of New Jersey.