Motorists in Labrador City and Wabush were forced to sit through a rare traffic jam on Tuesday evening.

More than 170 vehicles stopped traffic and honked horns — all part of western Labrador's annual Don't Drink and Drive Motorcade.

Volunteer Gail Pike said events like this one weren't always a big draw.

"The last few years have been very slow, and we thought we were going to rethink it," said Pike. "But I think people are now getting the message."

Volunteer Josephine Gaulton-Rowe said a death caused by drunk driving is no accident.

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MADD volunteer Josephone Gaulton-Rowe says people can assist police by calling in suspected drunk drivers. (CBC)

"Impaired driving, when there is a crash, it's a crash ... it's not an accident — they're 100 per cent preventable," said Gaulton-Rowe.

She added that all it takes to stop a drunk driver is to call 911.

"And some people kind of think, 'I don't know if they're impaired' – they don't have to – that's what the RNC does. All they have to do is suspect it, call 911 and they [the Royal Newfoundland Constabulary] take it from there," she said.

RNC Insp. Paula Walsh said people are rallying together in western Labrador.

"It's a community that really has registered that drinking and driving is absolutely not acceptable — and will not be tolerated," said Walsh.