hot lane
n.— «Toll lanes, also known as “hot lanes,” also play a big part in the plan, which suggests creating a network of them that reaches throughout the region. » —“Plan calls for more toll lanes on highways” by Michael Cabanatuan San Francisco Chronicle (California) Nov. 13, 2004. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...