Greece/Motorways

Government Gazette ΦΕΚ 253/ΑΑΠ/21.12.2015 is the legislative backbone for a the numbering system of a majority of motorways in Greece. However, there are some exceptions (as of March 2021), because of the current state of the road signs:

• The Α1 is not a motorway between Chalastra to Polykastro, because there is no central reservation.
• The Α24 is only a motorway between the Α2 and Papageorgiou interchange: everything south of the latter is an expressway.
• The Α242 is also not a motorway.
• The Α65 Egaleo Ring Road:
  • The section north of Aspropyrgos Avenue is not downgraded, because the motorway signage still exists.
  • The section south of Aspropyrgos Avenue is not a motorway, because the connection with the ΕΟ8 at Skaramagas was never built.
• The Α64, Α642 and Α62 have not been renumbered to Α62, Α621 and Α64 respectively, because all known signage still uses the old numbers: in the meantime, the new numbers will use the proposed:ref=* key.

Tempting it may be to counter those exceptions, but OpenStreetMap is not a crystal ball.

List of motorways and expressways in Greece

Ref	Rel.	Name	Status	Notes
		Αθήνα - Θεσσαλονίκη - Εύζωνοι		part from Chalastra to Polykastro is trunk road
		Εγνατία Οδός
		Αυτοκινητόδρομος Κεντρικής Ελλάδας		under construction
		Ιόνια Οδός (Ιωάννινα -> Ρίο)
		Ιόνια Οδός (Ρίο -> Ιωάννινα)
		Αττική Οδός		section Markopoulo - Lavrio upgrade planned
		Αυτοκινητόδρομος Πελοποννήσου
		Αθήνα - Πάτρα		motorway in circulation (although narrow in some sections)
		Σχηματάρι - Χαλκίδα
		Βελεστίνο - Βόλος		Upgrade works are under way.
		Θήβα - Ελευσίνα		Caution: Project shelved: recent improvements around Mandra are for the ΕΟ3.
		Περιφερειακή Οδός Θεσσαλονίκης (Βόρειος)		Caution: The Α24 is only a motorway between the Α2 and Papageorgiou interchange: everything south of the latter is an expressway (highway=trunk + motorroad=yes).
		Περιφερειακή Οδός Θεσσαλονίκης (Νότος) Θεσσαλονίκη - Νέα Μουδανιά
		Θεσσαλονίκη - Προμαχώνας		section Kato Christos - Sidirokastro upgrade planned
		Κοζάνη - Πτολεμαίδα - Νίκη		section Ptolemaida - Florina upgrade planned
		Σιάτιστα - Κρυσταλλοπηγή
		Κορωπί - Αεροδρόμιο		Caution: ΦΕΚ 253ΑΑΠ/2015 renumbered this as the Α64, but as of October 2017 the signage on location retains the old number.
		Υμηττός - Ραφήνα		Caution: ΦΕΚ 253ΑΑΠ/2015 renumbered this as the Α62, but as of October 2017 the signage on location retains the old number. section Pikermi - Rafina planned
		Περιφερειακή (Οδός) Αιγάλεω (Βόρειος)		Caution: ΦΕΚ 253ΑΑΠ/2015 does not include this, but the signage on location indicates the contrary.
		Περιφερειακή (Οδός) Αιγάλεω (Νότος)		Caution: The section south of Aspropyrgos Avenue is not a motorway, because the connection with the ΕΟ8 at Skaramagas was never built.
		Λεύκτρο - Σπάρτη
		Βόρειος Οδικός Άξονας Κρήτης		current highway is being upgraded
		Αυτοκινητόδρομος 242		pre-existing section is inferior to a motorway.
		Αυτοκινητόδρομος 642		Caution: ΦΕΚ 253ΑΑΠ/2015 renumbered this as the Α621, but as of October 2017 the signage on location retains the old number.

Junction numbers

Sections of some motorways, such as the Α1, do not have junction numbers: below is a list of verified motorway junction numbers. Junction numbers with letters, such as 1Α and Κ2, use the Greek alphabet.

Road	Sections with junction numbers		Notes	Ref.
	Start	End
	Παραλία Ραχών (53Α)	Κλειδί (77)	Checked with Mapillary, on 19 February 2023.
	Μάνδρα (1)	Κορωπί Νότια (Κ2)	Checked with Mapillary, on 20 February 2023.
	Κορωπί (Κ2)	Νότια Πύλη (Κ1)	Checked with Mapillary, on 20 February 2023.
	Κατεχάκη (Υ1)	Άγιος Γεράσιμος (Υ9)	Checked with Mapillary, on 20 February 2023.
	Αγία Παρασκευή (Υ4)	Δουκίσσης Πλακεντίας (13)	Checked with Mapillary, on 20 February 2023.
	Περιφερειακή Αιγάλεω (5)	Ασπροπύργου (5Α)	Checked with Mapillary, on 20 February 2023.