The truck driver would considered at fault by law, since there was no contact the reckless four-wheeler.
Truck driver lost control of his rid causing deaths.
There is a rule to keep truck drivers from liability of a crash: “You cannot avoid a wreck and cause a wreck.”
Driver should have maintained his lane and straight line braked only enough to decrease his speed to minimize his damage from contact if such were to occur.
The HazMat driver has his own legal obligation not to endanger the public with his cargo by his actions.
**Incidents like this is why my time driving 18’s OTR stopped after 3.5 years and 900k miles.**
That would be almost 5k miles every week for 3.5 years. You must have been a team driver.