Features
- Variable message signs
- Rumble strips
- Emergency telephones (every 2 km in the Balintawak-Burol segment, every 1 km in the Burol-Sta. Ines segment)
- Runaway truck ramp
- Rest and service areas (privately owned and operated)
- Closed-circuit television
- Guard rails
- Impact attenuators
- Solid wall fence
- Lighting arrestors
- Car density sensors underneath road surface
- Hidden speed guns
- Electronic toll payment (class 1), Prepaid account cards (class 2/3)
- Much of the expressway has been built to U.S. Interstate highway standards, featuring eight lanes through Metro Manila. As it enters the more rural area north of Manila, the expressway narrows to 6 and then 4 lanes with a grass median to separate the two carriageways.
- All signage is in English, and are nearly identical to the "big green signs" (BGS) on American expressway, including white lettering on a green background, with the exit tab in the upper-right corner (distance signs even employ a font similar—if not identical—to the Caltrans font; all other signs employ a different font).
- Like expressways in most American states, the NLEx uses a distance-based sequencing for numbering interchanges. Being a metric country, though, the system is kilometer-log rather than mile-log--exits numbered according to the distance (in kilometers) from Rizal Park in Manila, which is designated as Kilometer Zero in Luzon.
Read more about this topic: North Luzon Expressway
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