The Asin–Nangalisan–San Pascual Road serves as an alternative route to
Baguio, and is also the fourth that leads to Baguio from the northwestern lowlands of Luzon. The road also helps decongest the traffic in
Marcos Highway, despite being slightly longer than the said road. The road starts at the junction of
Marcos Highway (N208) in
Tubao, La Union as a four-lane road. Its features have many of the lightning and reflectorized signages and bus terminals. The Anduyan Bridge, which spans , carries along the route. After crossing the span, the road is narrowed to two lanes (one per direction) upon traversing the higher elevation that contains sharp curves and steep elevation upon entering
Benguet province. ==Intersections==