Massachusetts Hoisting License Practice Test 2025 – Complete Exam Prep Resource

Under Jackie's Law, which pertains to the safety requirements for covers over trench excavations, road plates that are at least three-quarters of an inch thick are deemed acceptable because they provide the necessary strength and durability to support traffic loads while ensuring the safety of individuals working near or around the trenches. These plates are specifically designed to withstand the weight of vehicles and other loads that may cross over the trench area, thereby minimizing the risk of accidents or collapses.

In addition to their strength, road plates offer a stable, flat surface when placed over trenches, which is essential for vehicles and pedestrians. The requirement concerning thickness ensures that these covers can resist bending or breaking under pressure, which is crucial in preventing potential hazards.

Other materials listed, while they may serve in different contexts, do not meet the specific safety guidelines required by Jackie’s Law for trench coverings. Therefore, the choice of road plates reflects the balance of safety, strength, and functionality necessary for protecting both workers and the general public.