How to say "freeway" in Japanese

• 高速道路こうそくどうろCommon
  nounCovers the freeway/expressway sense in full; this is the complete, formal word, appropriate in writing, announcements, and careful speech when naming this kind of road.
  私は新あたらしい高速道路こうそくどうろをドライブして楽たのしかった。↗

  I enjoyed driving on the new highway.
• 高速こうそくJLPT N3approx.Common
  nounThe same freeway sense, but as a shortened form of 高速道路; it is common in casual conversation, such as taking the highway somewhere, though less suitable in formal writing.

Both words refer to the same roads; 高速道路 is the full formal term, while 高速 is its common abbreviation, fine in everyday speech but less formal in writing.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 高速道路こうそくどうろhighway
• フリーウェイfreeway
• 自動車専用道路じどうしゃせんようどうろexpressway
• 高速こうそくhighway