Commonwealth Avenue, formerly known as Don Mariano Marcos Avenue,[a] is a 12.4-kilometer (7.7 mi) highway located in Quezon City, Philippines, which spans from six to eighteen lanes and is the widest in the Philippines.[3] It is one of the major roads in Metro Manila and is designated as part of Radial Road 7 (R-7) of the older Manila arterial road system and National Route 170 (N170) of the Philippine highway network.
Commonwealth Avenue starts from Elliptical Road, which circumscribes the Quezon Memorial Circle, and it passes through the areas of Philcoa, Tandang Sora, Balara, Batasan Hills, Fairview, and ends at Quirino Highway in the Novaliches area.
The avenue, being located on Quezon City, which is listed as one of several cities in Metro Manila with high incidence of road accidents, has a high rate of accidents, especially related to overspeeding, and has gained the nickname "Killer Highway".[1] A 60-kilometer-per-hour (37 mph) speed limit is being enforced to reduce the high rate of accidents on the avenue.
