Ringway 3 (Hanoi)

CT.37 Expressway
CT.37 Expressway
Ringway 3 Expressway (Hanoi)
Đường cao tốc Vành đai 3 Hà Nội
	Map of the CT.37 expressway with operational (blue) and under construction (pink) sections
	Elevated Ringway 3, near Mai Dịch junction, Cầu Giấy, Hanoi.
Route information
	Part of AH1 and ; (Pháp Vân IC - Phù Đổng Bridge)
	Maintained by Hanoi Department of Transportation (HNDoT)
Length	65 km (40 mi)
Status	Fully Completed (Thăng Long Bridge - Phù Đổng Bridge)
Existed	20 June 1998–present
Major junctions
West end	Thăng Long Bridge
	at Mai Dịch, Cầu Giấy District, Hà Nội; near Trung Hòa Interchange, Cầu Giấy, Hà Nội , AH13 near Thanh Xuân Interchange, Thanh Xuân District, Hà Nội; , , AH1 at Pháp Vân Interchange, Hoàng Mai District, Hà Nội; , AH1 at Cổ Linh Interchange, near Thanh Trì Bridge, Long Biên, Hà Nội , , , AH1, AH14 at Long Biên District, Hà Nội; ;
Location
Country	Vietnam
Provinces	Hanoi
Highway system
	Transport in Vietnam;

The Ringway 3 of Greater Hanoi area (Vietnamese: Đường Vành đai 3 Hà Nội), signed as CT.37 is a major freeway and urban thoroughfare surrounding the inner part of Hanoi. As the first ringway built in Greater Hanoi area, Ringway 3 connects most of the newly developed area outside the urban core of Hanoi. In addition to that, Ringway 3 is the terminus of most expressway connecting Greater Hanoi to other regions of Vietnam. Due to its importance, Ringway 3 is one of the busiest and most congested highway in Vietnam, carrying from 8 to 10 times its maximum capacity. To deal with congestion, the Government of Vietnam has proposed building additional ringway to help alleviate traffic on Ringway 3.