Peru | Area code 51 | Common abbreviation PE | Last updated 14-2-2009 | |||
| Road class | Syntax explanation | Administrative subordination | Sub classes | Zones | System | Remarks |
| National highway | [0-9]<1-3>{[ABCNS]|SA} | national | 1-/2-d | grid | exit numbers by km | |
| 3-d | ||||||
| General description: Odd 1- and 2-digit numbers generally denote north-south routes, while even numbers denote east-west routes. Numbers increase in eastbound and southbound direction respectively.
Highway 1 is the main north-south route linking Ecuador and Chile along the Pacific coast. The part near Lima is a motorway. 1A branches off 1 along the northern part of the coast. | ||||||
| Suffixes: | ||||||
| Road numbers | Suffix | Location | Remarks | |||
| Odd 1-digit | N | North of route 20 (from Lima to the east) | ||||
| S | South of route 20 | |||||
| Even numbers | A | Between routes 1 and 3 | There are many exceptions. Even numbers can even have suffix N. | |||
| B | East of route 3 | |||||
| A special case is highway 1SA (derived from 1S).
3-digit numbers are for less important roads. | ||||||
| Road signs: white with black text | ||||||
| History: no information available | ||||||
Sources and links: various maps and websites
Official sites: | ||||||