Editing Exit number (section)

==Exit numbers by country==

===Australia===
Distance-based exit numbering is used in Queensland, although there is not a consistent approach for defining the datum. For example, exit numbers may increase from south to north or north to south.

Victoria and New South Wales have partially implemented sequential exit numbering on selected urban motorways. For instance, the M31 Hume Motorway in New South Wales has exit numbering between Prestons and Campbelltown.

===Europe===
[[Image:Autobahn Exit 1.svg|thumb|150px|Exit numbers in most countries in Continental Europe]]
Most European countries use sequential numbering schemes. Spain uses distance-based numbering on its Autovias, but not on its Autopistas. Austria, the Czech Republic, Hungary and Slovakia use distance-based schemes. A number of European countries (including the Netherlands, Belgium and France) do not number motorway intersections, apparently because one cannot "exit" the motorway there. Countries like Germany and Switzerland number interchanges, but instead of the usual exit symbol, they are given a specific interchange symbol.
[[File:Valtatie 4 Finland Oulu erkanemisviitta.jpg|thumb|upright|Exit 10 at the intersection of the highway 20 on the [[Finnish national road 4|highway 4]] ([[European route E8|E8]]/[[European route E75|E75]]) in [[Oulu|Oulu, Finland]]]]
Italy uses sequential numbering on the ring roads for some cities, including the ring road of Rome (''GRA'') and Milan (''Tangenziali''). At one time, it referred to junctions on the [[Autostrada del Sole]]<ref>{{Cite web|url=http://mryamamoto.50megs.com/Autostrada_del_sole.html|title=Autostrada Del Sole|access-date=2006-09-14|archive-url=https://archive.today/20060505011533/http://mryamamoto.50megs.com/Autostrada_del_sole.html|archive-date=2006-05-05|url-status=dead}}</ref> by number, and published same on toll tickets; though these may not have been posted on signs.

[[File:UK traffic sign 2903.svg|thumb|upright=0.7|A UK motorway sign showing a junction number (25)]]
Both the United Kingdom and the Republic of Ireland use sequential numbering systems, with the junction number indicated by a white number in a black square in the corner of signs. In the United Kingdom they are frequently referenced in the media as the number with "J" on front of it, with for example Junction 58 being referred to as "J58"; as such this abbreviated term has entered popular usage. If a junction is newly constructed to between two existing junctions, it is normally allocated the number of the lower of the two junctions, with the letter "A" attached, followed by "B", then "C" (and so on). For example, a new junction opened between Junctions 86 and 87 would become Junction 86A, and if a new junction opened between Junctions 86A and 87, it would be Junction 86B.

In the Republic of Ireland, junction numbers have existed since the opening of the first section of the [[M50 motorway (Ireland)|M50 motorway]] in 1990.{{cn|date=February 2025}} Since 2005 have been given greater prominence on road signs. With the development of the [[Motorways in the Republic of Ireland#2000–2010|inter-urban motorway network in the 2000s]], the [[National Roads Authority]] adopted a numbering scheme for the inter-urban roads that saw Junction 1 be designated as that road's junction with the M50 in most cases.{{cn|date=February 2025}} This has meant renumbering of existing junctions on some motorways, most notably the [[M7 motorway (Ireland)|M7 motorway]]. Non-motorway dual carriageways forming part of major inter-urban roads also have junction numbers; however, only grade-separated interchanges are numbered.

Countries like Germany and Denmark do not number exits on single carriageway routes that are open only to motorised traffic.

===Canada===
[[File:Quebec Sortie 155.png|thumb|An exit number on a Québec Autoroute]]
Of the provinces that have numbered exit signs on their highways, the majority either use distance based or have switched to using distance based systems. Some highways may also supplement their roads wilth kilometre-based distance markers at specific intervals on the side of the road.

*[[Ontario]] has the oldest exit number system, having started posting exit numbers sequentially in the 1960s along [[Ontario Highway 401|Highway 401]]; it switched to mile-based (distance) numbering before Canada went metric. Most short freeways do not have exit numbers, and until about 2000 (with Highways [[Ontario Highway 11|11]] and [[Ontario Highway 69|69]]/[[Ontario Highway 400|400]]), incomplete freeways also did not have exit numbers. Interchanges with multiple exits are lettered ''A-B.'' On some highways, Ontario uses KM markers on the side, such as the 401 in Northumberland County. 
*[[Quebec]] has the second oldest system; it began sequential but switched to mile-based (distance) junction numbering before the Canadian metric conversion in the mid-1970s. Unlike Ontario, Quebec uses cardinal directions for multiple exits: ''E'' ("est"), ''N'' ("nord"), ''S'' ("sud"), and ''O'' ("ouest"); an example of the latter is ''20-O'' (with a hyphen) to avoid confusion with the number. 
*[[British Columbia]] uses distance-based exit numbers on its freeways. Some highways, such as Highway 91, have kilometre marker signs on the side. 
*[[Manitoba]] has the fewest posted exit numbers. [[Manitoba Highway 1|Highway 1]] has three numbered exits. Exit numbers were first posted on the [[Perimeter Highway]] in 2001. 
*[[Alberta]] has the newest exit number system. The province started posting exit numbers on [[Alberta Highway 2|Highway 2]] in 2004, and has since extended the system to Highways [[Alberta Highway 1|1]], [[Alberta Highway 16|16]], [[Stoney Trail|201]], and [[Anthony Henday Drive|216]]. In 2006, Alberta started building roadside kilometre markers in a few highways. Spacing is typically every four kilometres.
*[[Saskatchewan]] has recently switched to using the distance based system. This started with the Regina Bypass project where distance based exits are now used on the freeway. It uses distance-based exit numbers along with exits lettered A-B for interchanges with multiple exits. On a section of [[Saskatchewan Highway 11|Highway 11]] from [[Regina, Saskatchewan|Regina]] to [[Lumsden, Saskatchewan|Lumsden]], letters "A", "B", and "C" are used sequentially as "exit letters" instead, making Saskatchewan mainly a distanced-based system that utilizes a bit of sequential lettering as well.
*[[New Brunswick]] originally started out using sequential numbering but has switched to using distance based exit signs.

Sequential numbers are used only in [[Nova Scotia]], and [[Newfoundland and Labrador]].

*[[Nova Scotia]] also numbers level junctions on designated express highways. Multiple exits at an interchange use ''N-S'', or ''E-W''. (Nova Scotia also uses ''exit 0'' where an interchange is opened "before" Exit 1.) In some instances, exit numbers are skipped, usually as the result of new sections of 4-lane divided highway opening while the old arterial highway is downgraded to a collector highway. On Highway 104, exits 2, 9, 14, 16 and 34 are skipped.
*[[Newfoundland and Labrador]] uses sequential numbering for exit signs. Controlled access freeways in the province only exist around the St John's metropolitan area.

The territories of [[Yukon Territory|Yukon]], [[Nunavut]], and [[Northwest Territories]] use no exit numbers, as there are no [[freeway]]s or [[Controlled-access highway|expressways]] in the territories.

[[Prince Edward Island]] does not use exit numbers. The only limited access highway runs between New Haven and North River (part of the Trans Canada Highway), which features two interchanges, both unnumbered. The Albany Corner interchange near [[Borden-Carleton, Prince Edward Island|Borden-Carleton]] is the only other grade-separated exit.

===Hong Kong===
{{further|Hong Kong Strategic Route and Exit Number System}}

Exit numbers were introduced to major Hong Kong routes in 2004, in conjunction with the re-organization of the route numbers. A sequential numbering scheme is used.

===Japan===
The main expressway system uses sequential numbering; Metropolitan Expressway systems also use sequential junction numbering, usually appended with the expressway number expressed thus: 5-1; 5-2, etc. There are multiple toll expressways not operated by the major national syndicates or the Metropolitan Expressway Authorities that have no junction numbering scheme.

===New Zealand===
New Zealand began introducing exit numbers in the Auckland region in 2005. It uses a distance-based numbering system. The distance to the exit is measured from the origin of the highway. That is:
* State Highway 1 (Northern and Southern Motorways) measured from the origin of SH1 at [[Cape Reinga]]
* State Highway 16 (Northwestern Motorway) measured from the origin at the Port
* State Highway 18 (Upper Harbour Motorway) measured from the origin at SH1
* State Highway 20 (Southwestern Motorway) measured from the origin at SH1

There is no exit zero. If there is an exit within 1.499&nbsp;km of the origin, Exit 1 is used. Exit 2 would be between 1.500 and 2.499&nbsp;km of the origin. Subsequent 'exit zones' are at 1&nbsp;km intervals. Letter suffixes are added at multi-exit interchanges, or where two or more exits exist within the same exit zone. For example, State Highway 1 (Southern Motorway) has an Exit 429A (Symonds St), Exit 429B (Wellesley St) and Exit 429C (Port). Instead of replacing existing ramp and link signs, the exit numbers were added as supplementary information. Thus drivers can navigate either by exit number or name. Exit numbers are only used for exits that may be used by all vehicle types. Bus- or emergency vehicle-only exits would not be numbered.

Exit numbers are not used outside the Auckland region.

===Philippines===
[[File:Philippines road sign GE4-3A.svg|thumb|right|125px|Exit gore sign in the Philippines]]
Metric distance-based numbers are used on the tollways radiating from Manila. Supplemental "A" and "B" designations are appended to signage at the ends of slip roads.

===South Africa===
Uses distance based numbering (in kilometers) on main motorways. Letter suffixes are added at multi-exit interchanges, an example being the Buccleuch interchange in [[Johannesburg]].

Exit numbers are reset on the borders of the provinces as they were until 1994. This means that exit numbering may change in the middle of a province.

One exception to the usual distance based numbering is the southern portion of the M4 in [[Durban]], which uses sequential numbering.

===Taiwan===
{{multiple image
|width = 125
|image1= Taiwan Freeway Exit Sign.gif
|caption1= Taiwan exit sign prior to 2006
|image2= Taiwan Freeway New Exit Sign.gif
|caption2= Current Taiwan exit sign
}}
[[Taiwan]] uses distance-based exit numbers in kilometers.  If two exits are located within the same kilometer mark, the Roman letters are appended to differentiate the exits.  Taiwan did experiment with sequential exit numbers with National Freeway No. 1 for a couple of years, but abandoned the experiment in 2004.

Prior to 2006, Taiwan exit signs were generally near replicas of their US counterparts.  However, the exit signs now not only indicate the distance number, but they also display the Chinese code-name for the interchange.

===United States===
{{main|Exit numbers in the United States}}