Phetkasem Road

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Thai Highway-4.svg

Thailand Route 4
ทางหลวงแผ่นดินหมายเลข 4
Route information
Length: 1,274 km (792 mi)
Major junctions
North end: Bangkok
South end: Sadao checkpoint, Malaysia-Thailand border
Location
Major cities: Nakhon Pathom, Chumphon, Phattalung, Hat Yai, Sadao
Highway system
AH2

Highways in Thailand

Motorways
Road sign in Ratchaburi

Phetkasem Road (Thai: ถนนเพชรเกษม, also Petchkasem Road) or Thailand Route 4 (Thai: ทางหลวงแผ่นดินหมายเลข 4, AH2) is one of the four major highways in Thailand, along with Phahonyothin Road (Route 1), Mittraphap Road (Route 2), and Sukhumvit Road (Route 3). At 1,274 km, it is the longest highway in Thailand. It begins at Naowa Chamnian bridge in Bangkok Yai, Bangkok. It is named after Luang Phetkasemwithisawasdi, the seventh director general of the Department of Highways.

The provinces along the road are Samut Sakhon, Nakhon Pathom, Ratchaburi, Phetchaburi, Prachuap Khiri Khan, Chumphon, Ranong, Phang Nga, Krabi, Trang, Phattalung and Songkhla, linked to North-South Expressway (NSE) of Malaysia at Sadao pass and Bukit Kayu Hitam pass.

Phetkasem highway in Southern part (in red)

Three sections of the highway are also the Asian Highway AH2.

See also[edit]

Thai highway network