Northern Thailand
Highway 11
In Buri, Sing Buri – Chiang Mai. Part of AH13.
Highway 12
Tak – Phitsanulok – Khon Kaen. Part of AH, AH13, AH16 and continues into north-eastern Thailand to Somdet, Kalasin and Mukdahan.
Highway 101
Kamphaeng Phet – Nan. Part of AH13.
Highway 102
Si Satchanalai, Sukhothai – Uttaradit.
Highway 103
Rong Kwang, Phrae – Ngao, Lampang.
Highway 104
Kosamphi Nakhon, Kamphaeng Phet – Tak.
Highway 105
Tak – Mae Sariang, Mae Hong Son.
Highway 106
Thoen– Chiang Mai.
Highway 107
Chiang Mai – Mae Chan.
Highway 108
Chiang Mai – Mae Hong Son.
Highway 109
Fang –Mae Suai.
Highway 110
Superseded by Route 1.
Highway 111
Phichit Bypass Road.
Highway 112
Kamphaeng Phet Bypass Road. Superseded by Route 11.
Highway 113
Phichit – Phetchabun.
Highway 114
Lamphun town route.
Highway 115
Kamphaeng Phet – Phichit.
Highway 116
Lamphun – San Pa Tong, Chiang Mai.
Highway 117
Nakhon Sawan – Lao border at Phu Du part of AH13.
Highway 118
Chiang Mai – Chiang Rai.
Highway 119
Superseded by Route 102.
Highway 120
Mueang Phayao – Wiang Pa Pao.
Highway 121
Chiang Mai Outer Ring Road.
Highway 122
Nakhon Sawan Bypass Road. Part of AH1/AH2.
Highway 123
Mae Sai Bypass Road part of AH1/AH2.
Highway 125
Sukhothai Bypass Road. Part of AH16.
Highway 126
Phitsanulok Bypass Road.
Highway 127
Lampang Bypass Road.
Highway 128
Mae Hong Son Bypass Road.
Highway 129
Phrae Bypass Road. Part of AH13.
Highway 130
Entrance to Thai-Myanmar Friendship Bridge over Moei River.
Highway 131
Chiang Rai Bypass Road.
Route 1001 to 1198 [LINK]
Highway 1200 to 1430 [LINK]
North-Eastern Thailand
Highway 21 (Khotchaseni Road)
Saraburi–Loei.
Highway 22 (Nittayo Road)
Udon Thani–Nakhon Phanom as AH15.
Highway 23 (Chaeng Sanit Road)
Ban Phai, Khon Kaen–Ubon Ratchathani.
Highway 24 (Sathonlamak Road)
Nakhon Ratchasima–Ubon Ratchathani
Highway 201: Sikhio, Nakhon Ratchasima–Chiang Khan, Loei
Highway 202 (Arunprasert Road): Chaiyaphum–Khemarat, Ubon Ratchathani
Highway 203: (Superseded by Route 21)
Highway 204: Ratchasima Bypass Road
Highway 205 (Suranarai Road): Lopburi–Nakhon Ratchasima
Route 206 (Phimai Road): Khae Market – Hin Dat
Route 207: Phon, Khon Kaen-Non Daeng, Nakhon Ratchasima via Ban Mai Chaiyaphot, Buriram
Route 208: Maha Sarakham-Khon Kaen (Tambon Tha Phra)
Route 209: Entrance to Khon Kaen
Route 209: (uperseded by Route 12)
Route 210: Wang Saphung, Loei–Udon Thani
Route 211: Chiang Khan, Loei–Nong Khai
Route 212 (Chayanggoon): Nong Khai–Ubon Ratchathani
Route 213 (Thinanon Road) Maha Sarakham–Sakon Nakhon (now superseded by Highway 12 only Yang Talat-Somdet; section in Kalasin now superseded by Highway 299)
Route 214: Kalasin–Chong Chom, Kap Choeng, Surin
Route 215: Roi Et–Tha Tum, Surin
Route 216: Udon Thani Ring Road
Route 217: Warin Chamrap-Sirindhorn (Ubon Ratchatani)
Route 218: Mueang Buriram-Nang Rong (Buriram)
Route 219: Borabue, Maha Sarakham-Ban Kruat, Buriram
Route 220 Sisaket – Khukhan
Route 221: Sisaket – Khao Phra Wihan National Park
Highway 222: Phang Khon, Sakon Nakhon-Bueng Kan
Route 223: Sakon Nakhon-That Phanom, Nakhon Phanom
Route 224: Nakhon Ratchasima–Kap Choeng, Surin
Route 225: Chaiyaphum-Phetchabun-Nakhon Sawan
Route 226: Nakhon Ratchasima–Ubon Ratchathani
Route 227: Kalasin-Phang Khon, Sakon Nakhon
Route 228: Chum Phae, Khon Kaen–Mueang Nong Bua Lamphu
Route 229: Kaeng Khro, Chaiyaphum–Mancha Khiri, Khon Kaen
Route 230 Mueang Khon Kaen Ring Road
Route 231 Mueang Ubon Ratchathani Ring Road
Route 232 Mueang Roi Et Ring Road
Route 233: Entrance to Nong Khai (Route 2 – Route 212)
Route 234: Phetchabun Bypass Road
Route 235: Superseded by Route 223.
Route 238: Mukdahan Bypass Road
Route 239: Entrance to bridge over the Mekong River (Mukdahan)
Route 240: Phanom Bypass Road
Route 241: Sakon Bypass Road
Route 242: Nong Khai – Tha Bo
Route 243: Entrance to checkpoint at Nong Khai
Route 244: Entrance to bridge over the Mekong River (Amphoe Mueang Bueng Kan)
Route 288 (Mueang Buriram Ring Road)
Route 290 (Mueang Nakhon Ratchasima Ring Road)
Route 291: Mahasarakham Bypass Road
Route 292: Yasothon Bypass Road
Route 293: Surin Bypass Road
Route 294: Sisaket Bypass Road
Route 295: Entrance to bridge over the Mekong River (Nakhom Phanom)
Highway 299: Lam Nam Phan – Nong Bong; former portion of Highway 12 (was portions of Highway 213 and Highway 2042 before that).
Central, Western and Eastern Thailand
Highway 31 (Vibhavadi Rangsit Road)
Bangkok–Pathum Thani.
Highway 32
Ayutthaya–Nakhon Sawan as AH1/AH2.
Highway 33 (Suwannasorn Road,)
Saraburi–Sa Kaeo as AH1.
Highway 34 (Debaratna Road)
Bangkok–Chachoengsao as AH19.
Highway 35 (Rama II Road)
Bangkok–Pak Tho.
Highway 36 (Pattaya-Rayong Bypass Road)
Bang Lamung (Pattaya) – Rayong as AH123; to be replaced by Highway 361 and Motorway 7.
Highway 37: (Cha’am-Pranburi Bypass Road)
Cha Am – Pranburi.
Highway 38
(Don Mueang/Uttaraphimuk tollway).
Highway 301: Bang Sue (Bangkok) – Nonthaburi
Highway 302 (Rattanathibet Road): Chatuchak (Bangkok) – Bang Yai (Nonthaburi)
Route 303 (Suksawat Road) Chom Thong-Phra Samut Chedi
Route 304: Pak Kret, Nonthaburi–Nakhon Ratchasima as AH19
Route 305: Rangsit–Nakhon Nayok
Route 306 (Rama VII Bridge–Bang Phun)
Route 307: Pak Kret–Pathum Thani
Route 308: Entrance to Bang Pa-in
Route 309 (Rojana Road): Sing Buri – Ang Thong, Ayutthaya, following the Chao Phraya river
Route 310: Entrance to Saraburi
Route 311 (Narai Maharaj Road): Route 1, Mueang Lop Buri District – Route 1, Mueang Chai Nat District
Route 312: Route 1 to Chai Nat; now part of Route 3521
Route 313: Uthai Thani – Manorom – Route 1; now part of Route 3265
Route 314 (Siri Sothon Road): Bang Pakong – Chachoengsao (Chachoengsao Province)
Route 315: Chachoengsao – Chonburi
Route 316: Route 3 – Route 3150 (Chantaburi)
Route 317: Chantaburi – Sa Kaeo
Route 318: Trat – Hat Lek; now part of Route 3
Route 319 (Suwinthawong Road): Nong Cha Om – Phanom Sarakham
Route 320 (Prachin Thani Road)
Route 321 (Malaiman Road): Nakhon Pathom – Mueang Suphan
Route 322 Mueang Suphan – Don Chedi (Suphanburi)
Route 323: (Sangchuto Road): Ban Pong District (Ratchaburi Province) – Three Pagodas Pass, Sangkhla Buri District (Kanchanaburi Province) as AH123
Route 324: Kanchanaburi Province – Suphan Buri Province
Route 325: Bang Phae, Ratchaburi – Mueang Samut Songkhram
Route 326: (Prachuap Khiri Khan Road): Entrance to Prachuap Khiri Khan
Route 327 (Chumphon-Ranong Road, Mueang Chumphon Road): Pathomphon Intersection – Doc Lek Intersection
Route 329: Nong Khae – Suphan Buri, now part of Route 33
Route 330: Entrance to Ratchaburi
Route 331: Sattahip (Chonburi Province) – Phanom Sarakham (Chachoengsao Province)
Route 332 (Sattahip Bypass Road): Sattahip (Chonburi Province) – Ban Chang (Rayong Province)
Route 333: U Thong (Suphan Buri Province) – Phayuha Khiri (Nakhon Sawan Province)
Route 334: Mueang Ang Thong – Route 309 (Ang Thong Province)
Route 335: Route 32 – Route 311 (Mueang Sing Buri District)
Highway 336 (Lat Phrao Road): Chatuchak District – Huai Khwang – Wang Thonglang – Bang Kapi (Bangkok)
Highway 338 (Borommaratchachonnani Road)
Bangkok Noi – Route 4 (Nakhon Chai Si) as AH123.
Route 339
Route 306 (Bang Sue) – Nonthaburi – Pathum Thani. Now part of Route 307.
Route 340
Motorway 9/Route 345, Bang Bua Thong (Nonthaburi Province) – Route 1, Mueang Chai Nat (Chai Nat Province); became a portion of Route 37, now a portion of Motorway 9.
Route 341 (Sirindhorn Road)
Bang Phlat – Bang Kruai (Nonthaburi Province).
Route 342
(Pradit Manutham Road): Khet Bang Khen, Bangkok – Khet Watthana, Bangkok. Downgraded to local road.
Highway 343
Downgraded to local road.
Route 344
Route 3, Mueang Chonburi (Chonburi Province) – Route 3, Klaeng (Rayong Province).
Route 345
Motorway 9/Route 340, Bang Bua Thong (Nonthaburi Province) – Route 346, Mueang Pathum Thani (Pathum Thani District).
Route 346:
Route 1/Route 305, Thanyaburi (Pathum Thani Province)– Route 324, Phanom Thuan (Kanchanaburi Province).
Route 347
Mueang Pathum Thani (Pathum Thani Province) – Maha Rat District (Ayutthaya Province) as AH2.
Route 348
Aranyaprathet – Nang Rong as AH121.
Route 349
Route 315, Phanat Nikhom – Route 344, Nong Chak.
Route 350
Route 351, Nawamin – Route 304, Saeng Arun (Bangkok).
Route 351 (Prasoet Manukit Road)
Chatuchak District – Bueng Kum (Bangkok).
Route 352
Route 3004, Thanyaburi (Pathum Thani Province) – Route 309, Wang Noi (Ayutthaya Province).
Route 354
Entrance to Suvarnabhumi Airport.
Route 356 (Ayutthaya Bypass Road)
Route 32 – Route 347 (Ayutthaya).
Route 357
Suphanburi Ring Road.
Route 359: Route 33, Mueang Sa Kaeo (Sa Kaeo Province) – Route 304, Phanom Sarakham (Chachoengsao Province).
Route 360
Entrance to Chumphon.
Route 361
Chonburi Bypass Road.
Route 362
Saraburi Ring Road.
Route 363
Rayong Government Center – Map Ta Phut Industrial Estate. Former Route 3514.
Route 364
Rayong Bypass Road.
Route 365
Chachoengsao Bypass Road.
Route 366
Lopburi Bypass Road.
Route 367
Kanchanaburi Bypass Road.
Route 368
Ang Thong Bypass Road.
Route 369
Singburi Bypass Road.
Route 370 (Suvarnabhumi Road 3)
Entrance to Suvarnabhumi Airport.
Route 372
Aranyaprathet Bypass Road.
Route 375
Ban Bo – Don Tum.
Route 376
Ratchaburi Bypass Road; former Rural Road 1010.
Southern Thailand
Highway 41
Chumphon–Phattalung.
Highway 42
Songkhla–Narathiwat.
Highway 43
Songkhla–Pattani.
Highway 44
Krabi–Surat Thani.
Highway 401
Takua Pa–Nakhon Si Thammarat.
Highway 402
Takua Thung – Phuket.
Highway 403
Mueang Nakhon Si Thammarat – Kantang.
Highway 404 (Trang-Chalung Road)
Mueang Trang – Andaman Sea in Palian.
Highway 405
Now part of Highway 41.
Highway 406
Phattalung – Satun.
Highway 407
Klong Wa – Songkhla.
Highway 408
Nakhon Si Thammarat – Songkhla.
Highway 409
Pattani – Yala.
Highway 410 (Pattani–Betong Highway)
Pattani–Betong.
Highway 411 (Uttarakit Road)
Connection to Krabi. Downgraded to a local road.
Highway 412
Entrance to Ranong.
Highway 414 (Lopburi Ramesuan Road)
Mueang Songkhla – Route 4 (Songkhla Province).
Highway 415
Krabi – Surat Thani.
Highway 416
Mueang Satun – Palian. Now part of Highway 404.
Highway 417
Surat Thani Airport – Surat Thani.
Highway 418
Ban Khlong Khut – Ban Tha Sap.
Highway 419
Trang Ring Road.
Highway 420
Surat Thani Ring Road.
Highway 421
Satun Bypass Road.
Highway 425
Hat Yai East Bypass Road.