the expressway's Parañaque River alignment and (2) the alignment from NAIA Terminal 3 exit (+/- before the exit) to Andrew Ave off-ramp; the first part is configurated to tackle the possible traffic jam by the merging of NAIAX from the airport and Macapagal Boulevard 3 lanes to NAIA Interchange and 2 lanes to Skyway for another half part of the river alignment and above Airport Road to NAIA Terminal 3 Exit 2 lanes to NAIA Interchange and 3 lanes to Macapagal Boulevard west of NAIA Interchange 7-lane zones These zones are actually 5 lanes with an acceleration lane for each direction to cater vehicles transferring between interchanges that are so close to each other. from NAIA interchange to NAIAX-CAVITEX Interchange, where 4 lanes go westbound and 3 lanes go eastbound (to NAIA) from Skyway to Andrews Avenue off-ramp, where 4 lanes go westbound (to NAIA) and 3 lanes go eastbound Speed limit Unlike most limited-access expressway in the Philippine expressway network, the maximum speed on the route is due to space constraints on the expressway, resulting in smaller-radius curves. The expressway has an overhead speed gantry so drivers can see the speed they cruise on; the gantry itself is located near the eastbound off-ramp to NAIA 3. History On July 17, 2001, President Gloria Macapagal Arroyo and her Cabinet approved the construction of the NAIA Expressway, which would be funded through a Japanese loan package, and construction of its interchange with Skyway began on March 17, 2004. Construction of the NAIA Expressway Phase 1 (NAIA Terminal 3 Exit of Skyway) was completed and inaugurated on May 30, 2009. It provided an entry/exit ramp to the then newly-opened NAIA Terminal 3 and Resorts World Manila. Phase 2 of the NAIA Expressway project was approved by the Benigno Aquino III Administration on May 30, 2012. It included a extension of the expressway all the way to Macapagal Boulevard in Entertainment City, Parañaque via Andrews Avenue, Electrical Road (west of Domestic Road) and NAIA Road. The project was funded through a public-private partnership (PPP) scheme, with San Miguel Corporation winning the bidding for its construction, operation and maintenance. On January 2, 2014, construction began on Phase 2 of the NAIA Expressway. On September 22, 2016 at exactly 12:01 AM (PST), the second phase of the airport expressway from Macapagal Boulevard to NAIA Terminals 1 and 2 was opened to all motorists and airport