service road vs temporary route

service road

noun
  • A route which enters or circulates through an institution, compound, land area, etc. for purposes of private access, maintenance, or security. 

  • A relatively narrow road which runs alongside a major transportation route, such as a canal, a railway line, or a controlled-access highway. 

temporary route

How often have the words service road and temporary route occurred in a corpus of books? (source: Google Ngram Viewer )