Season 4 - Episode Guide

After three decades on the highway, a major change forces Eric Godard to adapt to a new crew on a tough rollover; a vicious pre-winter storm pushes Sonny into urgent on-the-job training; a jet fuel spill shuts down the entire 401.

When a tanker bursts open east of Toronto, a young operator faces a toxic mess; Gary reacts fast when he spots a dangerous mistake on the road; a rookie takes the controls for his first heavy job.

Steve's crew battles a fiery wreck in the heart of Toronto; the OPP takes to the air to keep the roads safe; when freezing rain ices up the highway around London, a newly-promoted rotator operator gets his first big test.

A pileup on the 401 brings traffic to a standstill and pushes the Ross crew into action; Sonny helps a driver stuck on a dangerous stretch of highway in Toronto; Herb's rookie Zach masters a difficult move for the first time.

A 70-vehicle whiteout crash shuts down Highway 400 and the OPP jumps to organize an army of recovery crews; the Sarnia team struggles to recover a severely damaged trailer without losing the load.

Eric is still working to find his place on the new County/Coxon team when a T-bone semi collision spurs them into action; with his first baby on the way, a blizzard in the east sends Andrew on an urgent rescue mission.

An air ambulance crew takes off after a pileup results in serious casualties; Preferred fights to clear two wrecks blocking the road to the border; a veteran operator rescues a leaning trailer.

After a triple crash, the crew from Chatham struggles to keep a mangled truck in one piece; a complicated air cushion job tests a new rotator operator; the new heavy crew at Metro gets a bad case of déjà vu.

Herb's team fights fire while tussling with a burned-out semi; as whiteouts rage across the 402 in Sarnia, Mark fights his way through a long backup to reach a job; a unique recovery crew faces a heavy load of peat moss and trailer ready to split.

With his dad away, Mitch works with his older brother to get a stubborn wreck onto the road, but these brothers rarely see eye-to-eye; Glen, Todd and the crew improvise to offload some extreme cargo.

When a rolled-over dump truck spills its load on the 401 in the middle of rush hour, Steve, Sonny and crew must make a split-second decision; Eric and his boss disagree on how to handle a shredded trailer.

Snow squalls attack Highway 402, sending Gary, Collin and Mark to work deep in the trees; a fuel tanker rolls next to rail lines in Toronto's industrial port lands; the Chatham crew improvises against a fire-ravaged wreck.

Mitch's new partnership with his brother is put to the test in the aftermath of a brutal storm; Eric, Derek and crew take on a load of steel pipes threatening to spring loose on the road; Andrew and his team wrestle difficult cargo.

Gary's crew and family come together for a multi-wreck scene blocking the border; low power lines and a bad fuel leak complicate a delicate recovery in Toronto; a garbage hauler creates a heavy mess for the Ross crew.