The Collaborative International Dictionary
bumper-to-bumper \bumper-to-bumper\ adj. moving slowly with little space between; -- used of road traffic. bumper-to-bumper traffic
Syn: crawling.
Wiktionary
a. Very crowded and slow-moving, particularly with regard to motor vehicle traffic.
WordNet
adj. used of traffic; "bumper-to-bumper traffic"
Usage examples of "bumper-to-bumper".
Behind their yellow plastic hoods, wide-eyed drivers sucked on green canisters and stared as Ryan ran between the lines of bumper-to-bumper vehicles.
Traffic coursed and bumper-to-bumper cars weaved from lane to lane, cutting each other off, hitting their brakes and making it hard to keep the Sentra in sight.
The parking lot was full and the surrounding streets were bumper-to-bumper cars.
They drove their cars and recreational vehicles bumper-to-bumper over the scenic seventeen-mile drive between Monterey and Carmel.
They drove their cars and recreational vehicles bumper-to-bumper over the scenic Seventeen-Mite Drive between Monterey and Carmel.
I stared into the brown haze, imagining shitloads of code 2s and 3s thwarted by noxious fumes and bumper-to-bumper revelry.
Imagine: bumper-to-bumper from Key West to Jacksonville: U-Hauls, Winnebagos, Air streams, station wagons, moving vans, buses, eighteen-wheelers.