Codes used in several countries
RP on a licence plate
RP is an area code in 4 countries. The plate's style and country code tell them apart.
Germany
RP-AB 1234Code details →Rhein-Pfalz-Kreis (Rhineland-Palatinate)
Norway
RP 12345Code details →Rogaland
named after Stavanger
Poland
RP 12345Code details →Przemyśl (Subcarpathian)
United Kingdom
RP51 ABCCode details →Reading