Cambodia | Area code 855 | Common abbreviation K | Last updated 25-1-2009 | |||
| Road class | Syntax explanation | Administrative subordination | Sub classes | Zones | System | Remarks |
| Asian highway | A[0-9]<2> | Asia | See Asia | |||
| National Road | (RN)[0-9]<1-2> | national | 1-d | spider-web | 1-30 | |
| 2-d | ||||||
| Provincial Road | (RP)[0-9]<2-3>{B} | national | >30 | |||
| General description: 1-digit numbers radiate in counterclockwise order from Phnom Penh.
2-d RP numbers are usually derived from 1-d RN numbers by adding a digit at the end. 3-d RP numbers are derived from 2-d RN and RP numbers by adding a digit at the end and from 1-d RN numbers by adding a zero and a digit at the end. Most RN numbers are not derived this way but some are (though this could be considered coincidence). The derived roads are linked to the main roads. Examples: | ||||||
| Main | Derived | Type | ||||
| 1 | 15 | RN>RN (exception) | ||||
| 4 | 43 | RN>RP | ||||
| 12 | 126 | RN>RP | ||||
| 1 | 106 | RN>RP with extra 0 | ||||
| 58 | 581 | RP>RP | ||||
| Road signs: Green with white text for through traffic and blue with white text for local destinations. Road numbers in a blue chevron marker as in Hungary with white text (though sometimes also white with black text) on directional signage and black with white text on kilometer markers. Usually in Cambodian (Khmer) and English. | ||||||
| History: no information available | ||||||
Sources and links: various maps and websites; Thomas Kneissl
Official sites: | ||||||