Highway 42 (Thailand)

National Highway 42
ทางหลวงแผ่นดินหมายเลข 42
ถนนเพชรเกษมปัตตานี-นราธิวาส, ถนนเกาหลี (บาตะห์ กอลี), ถนนรามโกมุท Phetkasem of Pattani-Narathiwat Road, Korean Road (Batah Koli), Ramkomut Road
Highway 42 in Don Yang Intersection, Nong Chik District, Pattani Province
Route information
Part of AH18
Length	262.312 km (162.993 mi)
Existed	1950–present
Major junctions
West end	Hwy 4 AH2 in Sadao (Songkhla Province)
Major intersections	Hwy 408 Hwy 409 Hwy 43 / AH18 Hwy 418 / Hwy 4296 / Hwy 4354 Hwy 410 Hwy 43 Hwy 4359
East end	FT 3 / AH18 in Su-ngai Kolok (Narathiwat Province)
Location
Country	Thailand
Provinces	Songkhla, Pattani, Narathiwat
Major cities	Pattani, Narathiwat, Su-ngai Kolok
Highway system
Highways in Thailand Motorways Asian Highways

Route 42 (Thai: ทางหลวงแผ่นดินหมายเลข 42) as known Khlong Ngae - Su-ngai Kolok Highway or Phetkasem Road of Pattani-Narathiwat^[1] in time when traveling from Pattani to Narathiwat. or Korean Road^[2] or Batah Koli in northeastern Malay language^[3] is a southeastern highway that connects Songkhla Province, Pattani Province and Narathiwat Province. There is a distance throughout the line of 263.779 kilometers.

Before highway numbers were assigned The road in the Pattani-Narathiwat section is called Pattani–Narathiwat Highway Later it was named Ramkomut Road on December 10, 1950, when Field Marshal P. Pibulsongkram was Prime Minister. In honor of Luang Parinya Yokhawibun (Chom-Ubon Ramkomut), the master technician who supervised the construction.^[4]

South Korean company, Hyundai Engineering & Construction (Including the former president of South Korea, Lee Myung Bak) also involved in the construction of Pattani (Don Rak)-Narathiwat highway section as supervisors in 1965, which is now locals called Korean Road.^[2]

In the past, Highway 42 usually routed from Ban Khlong Ngae, Sadao District , Songkhla Province to Ban Don Yang, Nong Chik District , Pattani Province. It is the main route for traveling between Songkhla Province and Pattani Province. But when there is construction of Highway 43 has increased, causing vehicles traveling to use this route instead. Because it helps to reduce time and distance better. It is also a 4-lane highway, while Highway 42, Khlong Ngae - Don Yang section. It is a 2 lane highway.

Highway 42 used to end in the city of Narathiwat. The distance at that time was approximately 198 kilometers (123 miles). Later, Highway 4084 and Highway 4057 were included as part of this highway as well. To connect to the border crossing point at Su-ngai Kolok.

Legend:

• I/C - Interchange, I/S - Intersection, RSA - Rest and service area, OBR - Overhead bridge restaurant, R/R - Restaurant and rest plaza, L/B - Layby, V/P - Vista point, TN - tunnel, T/P - Toll plaza, BR - Bridge

Province	District	Km	Exit	Name	Destinations	Notes
Songkhla	Sadao	0+000		Sadao	Hwy 4 / AH2 – Bangkok, Songkhla, Hatyai, Dannok, Padang Besar	T-junctions
				Phangla	SK.2039 – Hatyai	T-junctions
	Na Thawi	29+183 29+693		Na-Thawi	Hwy 408 – Hatyai, Songkhla, Ban Prakob	Junctions
				Wang Yai	SK.2032 – Nathawi SK.2003 – Sathon	T-junctions
	Thepha	60+132		Thepha	Hwy 4085 – Chana, Ban Phraphut, Sabayoi, Kabang, Yala	Junctions
Songkhla-Pattani provincial border			BR	Thayee Bridge
Pattani	Khok Pho			Khok Pho train crossing
				Khok-Pho	PN.2003 – Nong Chik PN.2063 – Chang Hai Tok	Junctions
		82+600		Naket	PN.2010 – Ban Basa-ae, Yarang Hwy 409 – Ban Niang, Yala, Yaha	Junctions
	Khok Pho-Nong Chik border		BR	Bo Thong Bridge
	Nong Chik	89+600		Bang Khao (Don Yang)	Hwy 43 / AH18 – Bangkok, Songkhla, Hatyai, Thepha, Yarang, Yaring, Narathiwat	Junctions
			BR	Bang Khao Bridge
				Nong-Chik	PN.2070 – Ban Prang PN.2013 – Yarang	T-junctions
	Mueang Pattani	100+236		Rusamilae (Don Rak)	Hwy 4296/ Hwy 4354 – Mueang Pattani Hwy 418 – Maelan, Ban Limud, Yala	Junctions
				Pattani River Bridge
		103+658		Pattani, Thailand	Yarang Road – Mueang Pattani, Anoru Hwy 410 – Yarang, Yala, Betong	Junctions (under construction of new bridge)
		107+900		Bana	Hwy 4356 – Mueang Pattani, Pattani Port Hwy 4355 – Mueang Pattani	T-junctions
				Tanyong Lulo	Hwy 4357 – Masjid Krue-Se, Bang Pu	Y-junction
				Barahom	Hwy 4297 – Bangpu, Yaring, Yamu	T-junctions
				Buecho	Hwy 4358 – Yaring	T-junctions
	Yaring	112+800		Ban Dee	Hwy 43 – Yarang, Nongchik, Hatyai, Songkhla	T-junctions
		11X.XXX		Bang Pu	Hwy 4359 – Yaring	T-junctions
		1XX+XXX		Yaring	Local Highway – Talok Kapor PN.2020 – Mayo, Yarang
		12X+XX		Yamu	Hwy 4298 – Yaring	Junctions
			BR	Khlong Tanyong Bridge
		126+208		Tanyong Dalo	Hwy 4075 – Ban Nok, Panare	T-junctions
	Mayo-Panare	135+108		Mayo/Panare	Hwy 4061 – Panare, Mayo, Thungyangdaeng, Yarang, Yala	Junctions
	Sai Buri	145+325		Trobon	PN.2061 – Ban Chamao Samton, Saiburi Hwy 4074 – Thungyangdaeng, Raman, Yala	Junctions
		14X+XX		Cho-kueyae	Hwy 4299 – Saiburi, Yaring, Raman	Junctions
			BR	Saiburi River Bridge
		152+866		Saiburi	Hwy 4060 – Taluban, Saiburi, Kapho, Raman, Si Sakhon	Junctions
		154+559		Lahan	Hwy 4157 – Saiburi, Panare, Ban Talokapo	T-junctions
Pattani-Narathiwat provincial border			BR	Kodo Bridge
Narathiwat	Bacho	159+042		Ban Kodo	Hwy 4136 – Maikaen, Mueang Narathiwat	T-junctions
		160+461		Palukasamo	Hwy 4168 – Kapho, Raman, Yala, Maikaen, Bacho, Mueang Narathiwat	Junctions
		171+196		Bacho	Local Highway – Pataerayo Waterfall, Raman Hwy 4155 – Mueang Narathiwat	Junctions
	Yi-ngo	180+096		Tapoyo	Hwy 4066 – Rueso, Raman, Yala, Mueang Narathiwat	Junctions
				Yi-ngo	Hwy 4300 – Ra-ngae, Rueso, Si Sakhon	Y-junctions
	Mueang Narathiwat	193+536		Narathiwat	Hwy 4084 – Bang Nak, Takbai	T-junctions
		197+333		Lamphu	Hwy 4055 – Mueang Narathiwat, Ra-ngae, Ban Dusongnyo, Chanae	Junctions
			BR	Bang Nara Bridge
		211+988		Sapom	Hwy 4084 – Mueang Narathiwat, Yi-ngo	Junctions
	Tak Bai	229+962		Tak-Bai	Hwy 4237 – Chehe	T-junctions
			BR	Chehe Bridge
	Su-ngai Kolok	262+283		Pasemat	NT.4031 – Su-ngai Padi	T-junctions
				Su-ngai Kolok train crossing
		262+929		Su-ngai Kolok	Hwy 4056 – Su-ngai Padi, Cho-airong, Mueang Narathiwat Hwy 4057 – Waeng, Buketa, Lochut, Sukhirin	Junctions
				Su-ngai Kolok Checkpoint
		263+779	BR	Kolok River Bridge		Crossing Length: 109.73 m
ASEAN Thailand–Malaysia Border Through to FT 3 / AH18 Malaysia Federal Route 3

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