Outer Ring Road System

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Outer Ring Road System
Outer Ring Road System is labelled in double navy blue line
Route information
History	Introduced in 1994
Major junctions
West end	Ayer Rajah (AYE)
Major intersections	AYE, PIE, NSC, CTE, KPE
East end	Tampines
Location
Country	Singapore
Highway system
Expressways of Singapore

The Outer Ring Road System, or more commonly known as ORRS, is a network of major arterial roads in Singapore that forms a ring road through the towns along the city fringe. The ORRS is a semi-expressway, just like the West Coast Highway. Since 1994, roads along the ORRS have been upgraded in stages to provide a smoother route to travel across the island. Roads and interchanges along the ORRS are constantly being upgraded to cater to the ever increasing traffic demand. It starts as Portsdown Avenue in Queenstown and ends as Tampines Avenue 10 in Tampines. The series of roads passes through the areas of Queenstown, Bukit Timah, Central Catchment Nature Reserve, Bishan, Toa Payoh, Geylang and Tampines.