The Pan Island Expressway (PIE) is the oldest and longest motorsway in Singapore. The first section of it was built in 1977, and over time, it was extended to reach its present length of 42.8 km (26.6 mi) by 1992. The expressway connects Tuas in the west with Changi Airport in the east.
The earliest stretch of Pan Island Expressway was created out of existing roads such as Whitley Road, Jalan Toa Payoh, Jalan Kolam Ayer and Paya Lebar Way. The traffic lights along this route were gradually replaced by grade-separated interchange, enabling continuous driving from one end to the other.
The eastern end of the Pan Island Expressway, comprising a new road between Jalan Eunos and the East Coast Parkway, was completed in 1980 while the western end, from Jalan Anak Bukit to Corporation Road, was completed in 1981. By then, the PIE was 35 km (22 mi) in length.
In 1992, the Pan Island Expressway was extended a further 8 km (5 mi) to connect with the Kranji Expressway and to end at the Ayer Rajah Expressway. This also involved a realignment of the expressway. The short stretch between Hong Kah Flyover and Corporation Road was downgraded and renamed Jurong West Avenue 2.
Exits on the Pan Island Expressway are numbered from east to west. The exit numbers correspond roughly to the distant markers in kilometers. Details on the exits and ERP gantries along this expressway are provided below.
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