bumper-to-bumper

from WordNet (r) 3.0 (2006)

bumper-to-bumper
    adj 1: used of traffic; "bumper-to-bumper traffic"

from The Collaborative International Dictionary of English v.0.48

bumper-to-bumper \bumper-to-bumper\ adj.
   moving slowly with little space between; -- used of road
   traffic. bumper-to-bumper traffic

   Syn: crawling.
        [WordNet 1.5]