Template:Infobox road/doc

This is the basic syntax you need to get a complete routebox on the article page, just place this before any other text and fill in the variables. Note that this is a complete list of every variable that can be used with Infobox road and that many are unnecessary in most cases. Variables that are empty can be omitted. 

Political entities
Three parameters exist for supplying the political entity that the road is located in. Only one may be used on a given article, preferably the most applicable of the three.

Shields and highway names
If no political entity is specified, two parameters may be used to add a shield and the highway name. If a political entity is specified, there is no need to use these parameters except to overwrite the text generated by the political entity, "type" and "route".
 * marker_image: shield image to be displayed
 * highway_name: road name to be displayed, usually the number of the road (example: "New York State Route 5").

Length
Multiple scenarios for lengths have been detailed below.


 * If neither length_mi nor length_km exists, no length is displayed.
 * If both length_mi and length_km are defined, use length_first to specify which one appears first. Accepted values are "mi" and "km".
 * If only one of length_mi or length_km is defined, that one appears first. The other is calculated and rounded to length_round (default 0) places. If the length is to a greater precision than the nearest unit, adjust length_round to match but be sure to avoid false precision.
 * length_ref, if defined, appears after the first length. Use a citation for the length or fact here. Be sure that the first length is the one for which you have a reference.
 * length_notes, if defined, appears as a note below the length. This can be used to show former length, or future length, etc.

General content

 * name_notes: foot notes that will be displayed in small text underneath the highway name
 * type: usually the two-letter state abbreviation for state roads; see the state WikiProject for more details
 * route: This is the number of the route the article is about (used only with a political entity)
 * alternate_name: Use in situations where the entire route has another name (i.e. NY 590 is called the Sea Breeze Expressway for its entire length)
 * maint: The agency that maintains the highway
 * section The section of code that defines this route. Only CA and WA use this, and the appropriate subpage ( /CA law for example) must be set up.
 * map: image name of a map for the route, width should be 290px; see the maps task force for maps; set map_custom=yes for a nonstandard map
 * established: This is the date the route was commissioned or assigned to its current alignment
 * decommissioned: date the route was decommissioned
 * direction_a: For U.S. roads, this should be either south or west to keep in accordance with the U.S. Roads project, which lists termini and junctions in progression traveling from West to East and South to North.
 * starting_terminus: This is where the route begins and, for U.S. roads, is either at the southern terminus or western terminus.
 * beltway_city: for beltways. This is the city that the beltway encircles
 * junction: a list of major junctions. Each WikiProject has different standards for major junctions, so consult the relevant WikiProject for more details.
 * direction_b: The opposite of direction_a
 * ending_terminus: where the route ends, in accordance with the guidelines set forth with starting_terminus
 * counties: a list of counties that the route enters
 * rural_municipalities: a list of rural municipalities that the route enters (specific to Manitoba and Saskatchewan)
 * cities: a list of cities that the route enters
 * system: the highway system that the article route is part of
 * previous_type: This is the type of route that proceeds the current one in the system. For U.S. roads, the value for this is: Interstate, US, or (State) for Interstates, U.S. Routes and other state roads, respectively. Each state has a different parameter for state roads, so consult the WikiProject if in doubt.
 * previous_route: The number of the route preceding this one
 * next_type: Same as previous_type but for the route following this one
 * next_route: The number of the route succeeding this one
 * browse: use to add additional browse lines
 * commons: use to add link to image gallery or category in commons, input should be gallery, category, or left blank
 * customcommons: (use with commons) use to specify a different gallery/category than the default that is linked