|International reference number or code on roads, highway exits, routes, etc.|
|Used on these elements|
|Status: in use|
|Tools for this tag|
"int_ref" stands for "international reference" and is used for international reference numbers or codes.
The int_ref=* tag is not needed on roads where the ref=* tag is the same as the international reference.
E-road network (Europe/Eurasia)
The reference format is E followed by a space followed by up to 3 digits.
A list of all the E-routes can be found on International E-road network; be aware, that writing in en-WP is not according to the definition of the e-roads which is with a space. Please only use a leading zero if it is used on physical signs in the relevant country, otherwise references on maps and in navigators will be inaccurate.
Trans-African Highway network
The reference format is TAH followed by a space followed by digits. Example: int_ref=TAH 1
A list of all the TAH-routes can be found on Trans-African Highway network.
Asian Highway Network
The reference format is AH followed by digits. Example: int_ref=AH1
A list of all the AH-routes can be found on Asian Highway Network.
E-waterway network (Europe/Eurasia)
Please use relations for international routes.
The format is "E" followed by a space, followed by a 2-digit number, e.g. int_ref=E 10
A list of E-Waterway-Relations can be found at WikiProject Europe/E-waterway network.