The Metropolitan Manila Development Authority (MMDA) recently issued updated guidelines to the Unified Vehicular Volume Reduction Program (UVVRP) or the number coding scheme. The agency has been receiving numerous daily inquiries from the public regarding the implementation of the policy.

Resulting from the recent cancellation of several exemptions to the number coding scheme through the recently issued Memorandum Circular Number 4, the agency's Twitter account (, as well as MMDA Hotline 136, have been flooded with questions and clarifications on the matter.

The UVVRP took effect on June 1996 as per MMDA Regulation Number 96-005 duly approved by the Metro Manila Council (MMC), the policy-making body of the MMDA, which is composed of the mayors of the seventeen local government units (LGUs) comprising Metro Manila.

The scheme was designed to curb the high volume of vehicles plying the national, city, and municipal roads within the metropolis, specifically during peak hours.

Under the regulation, all motor vehicles, both private and public, shall be prohibited from operating within Metro Manila during the corresponding days of the week, depending on the last digit of their license plates, from 7:00 a.m. to 7:00 p.m., with observance of window hours for private vehicles from 10:00 a.m. to 3:00 p.m.

However, there were some modifications to the scheme during the years through various city / municipal resolutions and ordinances, depending on the respective LGUs.

Listed below are the most updated rules on UVVRP being implemented by the seventeen LGUs:

· Number coding is in effect from 7:00 a.m. to 7:00 p.m., without window hours in Makati, Malabon, and Las Piñas.

· Marikina, Muntinlupa, Taguig, and Parañaque do not implement the number coding.

· Pasig City implements the number coding and observes window hours from 9:00 a.m. to 4:00 p.m.

· The number coding scheme is in effect in Caloocan, Mandaluyong, Manila, Navotas, Pateros, Quezon City, San Juan, and Valenzuela. The window hours of 10:00 a.m. to 3:00 p.m. is observed.

· Pasay City is implementing the UVVRP except on the following roads: Ninoy Aquino Avenue, MIA Road, Domestic Road, Airport Road, Sales Road, and portions of Buendia.

· Epifanio Delos Santos Avenue (EDSA), Circumferential Road 5 (C5), Diosdado Macapagal Avenue, and Roxas Boulevard all have window hours regardless of the city.

MMDA also reminds the public that the number coding is not implemented on weekends and is normally suspended during the observance of national and special holidays.

The full text of Memorandum Circular Number 4 may be viewed online at