Editing Miles per hour (section)

=== Rail networks ===
Miles per hour is the unit used on the US, Canadian and Irish rail systems.<ref name="Classlist">{{cite web
  | title = A. Classes of Track 
  | work = Rules Respecting Track Safety
  | publisher = Transport Canada
  | date =3 November 2008 | url = http://www.tc.gc.ca/eng/railsafety/rules-tce31-98.htm
  | archive-url = https://web.archive.org/web/20120825070252/http://www.tc.gc.ca/eng/railsafety/rules-tce31-98.htm
  | archive-date = 25 August 2012
  }} Archived 25 August 2012.</ref><ref>{{Cite web|title=Republic of Ireland|url=http://www.railsigns.uk/overseas/ireland2/ireland2.html|access-date=22 February 2021|website=www.railsigns.uk}}</ref><ref>{{Cite web|last=Rail|first=Irish|title=Network Statement|url=https://www.irishrail.ie/en-ie/about-us/iarnrod-eireann-network-statement|access-date=22 February 2021|website=Irish Rail|language=en}}</ref> Miles per hour is also used on British rail systems, excluding trams, some light metro systems, the [[Channel Tunnel]] and [[High Speed 1]].<ref>{{Cite web|title=Permanent Speed Restriction Signs|url=http://www.railsigns.uk/photos/p_psr2/p_psr2.html|access-date=10 July 2020|website=www.railsigns.uk}}</ref>