phantom jam

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|automotive}} A [[slowdown]] in [[traffic]] that occurs without an [[apparent]] [[reason]].
2. {{lb|en|automotive}} A [[traffic jam]] that appears at a distance on a [[highway]], but [[in reality]] is an [[optical illusion]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.