The alignment curves to the right as it crosses Argonaut Highway and goes up as it enters the Bataan National Park.

The alignment then veers in a southeasterly direction, traversing the side slopes of the mountain.

[4] As part of NLEX Corporation's expansion and improvement of its toll roads, the expressway was expanded to accommodate an additional carriageway, including two bridges and a tunnel parallel to the existing ones.

[7] The expressway's electronic toll collection (ETC) system uses devices branded Easytrip by its concessionaire, NLEX Corporation.

The toll rates, implemented since June 4, 2024, are as follows:[8] This entire route is located in Central Luzon.