Editing Exit number (section)

===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.