List of highways numbered 21
Wikimedia list article
For roads named A21, see List of A21 roads
Route 21, or Highway 21, can refer to:
International
E21 European route E21
Australia
Chandler Highway
Toowoomba Connection Road (QLD)
– Kakadu Highway
Austria
Wiener Außenring Autobahn
Cambodia
National Road 21 (Cambodia)
Canada
Alberta Highway 21
British Columbia Highway 21
Manitoba Highway 21
Newfoundland and Labrador Route 21
Ontario Highway 21
Prince Edward Island Route 21
Saskatchewan Highway 21
Costa Rica
National Route 21
Cuba
Highway 6–21
Highway 4–21 (former)
Czech Republic
I/21 Highway; Czech: Silnice I/21
Greece
EO21 road
Hungary
Main road 21 (Hungary)
India
National Highway 21 (India)
Iran
Road 21
Freeway 21
Ireland
N21 road (Ireland)
Italy
Autostrada A21
Japan
Japan National Route 21
Korea, South
National Route 21
Malaysia
Kajang–Seremban Highway
FT 21 Malaysia Federal Route 21
Moldova
M21 highway (Moldova)
New Zealand
New Zealand State Highway 21
Paraguay
National Route 21
Turkey
O-21, a motorway in Turkey running from Kemerhisar, Niğde Province to Tarsus, Mersin Province.
The public source identifies “List of highways numbered 21” as wikimedia list article. This brief keeps that definition visible, then builds a research path around List, highways and numbered.
Why this record matters
A short description can identify a subject without explaining its stakes. For “List of highways numbered 21”, the useful work is to connect “wikimedia list article” to the records capable of establishing context and consequence.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 9, 2026. The linked authority identifier is Q59982960. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “List of highways numbered 21”, its source revision and the description used here.
- Expand the search: follow List of highways numbered 21 primary sources, List of highways numbered 21 archive and List research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “List of highways numbered 21”?
- What terminology or title could unlock a more precise catalogue search?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “List of highways numbered 21” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.