This is a documentation subpage for Template:Jct.
It may contain usage information, categories and other content that is not part of the original template page.

This template is used on 18,000+ pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them.

This template uses Lua:

Module:Jct

This template produces a junction listing for the junction list of a highway article, and can be used as an argument to |road= in a template for an intersection such as ((jctint)).

Usage

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The full syntax is as follows.

((jct|country=|state=
  |to1=|1|2|county1=|dab1=|dir1=|name1=
  |to2=|3|4|county2=|dab1=|dir2=|name2=
  |to3=|5|6|county3=|dab1=|dir3=|name3=
  |to4=|7|8|county4=|dab1=|dir4=|name4=
  ...
  |toroad=|road=
  |city1=|location1=
  |city2=|location2=
  |city3=|location3=
  |city4=|location4=
  ...
  |extra=
))

Many parameters shown above are unnecessary in most cases, and can be omitted.

Parameters

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Parameters |in bold= are most important.

Location

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|country= accepts the ISO 3166-1 alpha-3 code of the country that the junction is in. Use this list to find the correct code for the country. These countries have had the necessary subtemplates set up; see that page for instructions on how to set up new countries.
|state= or |province= may be used in place of |country= if the junction is located within one state, province, or territory in the United States, Canada, Mexico, or Australia. The possible values are as follows:
- U.S. state: |state= accepts the two-letter postal abbreviation of the state.
- Canadian province: |province= accepts the two-letter postal abbreviation of the province.
- Mexican state: |state= accepts the three-letter postal abbreviation of the state.

Intersecting routes

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|1=, |3=, |5=, ..., |<2i-1>=, ... accept the type of the i^th route at the junction. Arguments may replace the numeric parameters, e.g., |I may be used instead of |1=I. The route types are defined as follows:

For routes in the United States, see this page.

For routes in Canada, the following designations are supported:

AB (Alberta) - Hwy (primary and secondary provincial highways)
ON (Ontario) - Highway (provincial highway, all types), RR (Regional Road, must supply a county argument for region)
QC (Quebec) - Route (standard route), A (Autoroute)
MB (Manitoba) - Hwy (primary provincial highway), PR (secondary provincial highway), Winnipeg (Winnipeg city route)
NB (New Brunswick) - Route (NOTE: Not all routes have shield graphics at present.)
NS (Nova Scotia) - Trunk (trunk route), Hwy (highway), Route (other route)
PE (Prince Edward Island) - PE (all numbered routes except TCH)
All provinces - TCH (Trans-Canada Highway)

For routes in Australia, see this page.

For United Kingdom routes:

M = Motorway
A = A roads

For A roads that have a motorway segment, example: A1(M), use M as the route type and the A1 as the number

|2=, |4=, |6=, ..., |<2i>=, ... accept the route number for the i^th route at the junction. Arguments may replace the numeric parameters.
|dir1=, |dir2=, |dir3=, ..., |dir=, ... accept a string for the direction of the i^th route at the junction, when not all directions are accessible, e.g., Interstate 10 east.
|name1=, |name2=, |name3=, ..., |name=, ... accept wikicode for the common name of the i^th route at the junction.
|to= accepts any value. The presence of |to= indicates that the i^th route at the junction is accessible indirectly via an earlier route in the list.

|toroad= has the same behavior for |road=.

|county= accepts the name of a county the i^th route at the junction is in, for disambiguating county routes.
|dab= accepts a string indicating the location for the i^th route at the junction, for further disambiguating routes that may appear in multiple locations, such as Interstate business routes. For example, |dab1=Pennsylvania–New York gives [[Interstate 86 (Pennsylvania–New York)|I-86]].
|road= accepts wikicode for road names. Multiple road names may be separated by a slash /.

Destinations

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|city1=, |city2=, |city3=, ..., |city=, ... accept the name of an in-state city listed on the guide sign at the junction, i.e., control cities. The city is assumed to be in the same state as the junction, and will be automatically wikilinked.

|areadab= accepts the area to be used for further disambiguating the i^th city, such as a name that could refer to a town or a village within the same county.

|countydab= accepts the name of the county to be used for disambiguating the i^th city, e.g., for a town whose name coincides with another in a different county within the same state.

|location= accepts wikicode that overrides |city=, and should be used if the destination city is located outside of the state the junction is in.

|extra= accepts one of the following values to display a MUTCD intermodal icon along with route shields:
- airport for an airport
- bus for a bus terminal
- ferry for a ferry terminal
- rail for a passenger rail station
- light-rail for a light-rail station

Specifications for additional types and custom shields may be added to Module:Road data/extra.

Appearance

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|noshield= accepts any value. The presence of |noshield= indicates that the shield for the i^th route at the junction should not be displayed.

|noshield= accepts any value. The presence of |noshield= indicates that no shield should be displayed.

|nolink= accepts any value. The presence of |nolink= indicates that the i^th route at the junction should not be wikilinked. This is useful for a minor route that will never have an article.

|nolink= accepts any value. The presence of |nolink= indicates that all routes at the junction should not be wikilinked.