Missouri Class F Written Test Practice
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Passing target: 80% (20/25)
On a four-lane divided highway, you come up behind a slow truck in your lane. It has a large flashing arrow panel pointing left and a SLOW VEHICLES sign. What should you do?
A approaches a slow white work truck in the right lane. Its left-arrow panel is shown on the truck and enlarged above the words SLOW VEHICLES.
Correct answer: Slow down and merge left as the arrow shows, watching for workers near the roadway.
Why
A mobile work zone is work in a travel lane that moves along the road, so it can appear with little warning beyond the protective vehicle at its rear. Expect more than one slow or stopped work vehicle ahead of that truck, and give workers room when they step out. Under Missouri law, failing to obey the traffic control devices set up in a work zone while workers are present counts as endangerment of a highway worker.
Verified against Missouri Driver Guide · Mobile Work Zone · p. 55, 56
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