Upset about a hotel on northern road (8)

I believe the answer is:

autobahn

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'road' is the definition.
(autobahn is a kind of road)

'upset about a hotel on northern' is the wordplay.
'upset' indicates an anagram.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'on northern' becomes 'n' (abbreviation e.g. N. Ireland. I am not sure about the 'on' bit.).
'about' anagrammed gives 'autob'.
'autob'+'a'+'h'+'n'='AUTOBAHN'

Can you help me to learn more?

(Other definitions for autobahn that I've seen before include "Great way" , "high-speed route" , "overseas route" , "expressway" , "German lanes" .)

I've seen this clue in The Sun.

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