You must obey any direction, order, or signal made by a police officer or firefighter,

a. even if it conflicts with existing signs, signals, or laws

b. even if it is unsafe to do so

c. unless it conflicts with existing signs, signals, or laws

d. unless you are in a truck weighing more than 26,000 lbs

A: This was actually part of my drivers test. If you think about the role police officers and fire fighters play during emergencies sometimes they have to redirect the flow of traffic or control crowds. Sometimes an officer may be directing traffic. It's important to listen and do as told in situations like crowds.