A certified worker assigned to control traffic flow through a construction or maintenance zone using signs, flags, or hand signals.
Whose instructions must be obeyed in a work zone: a traffic light or a flagger?
A flagger's instructions always override any other traffic signals or signs. You must obey the flagger's directions.
A flagger extends a staff with a "STOP" sign into your lane. What is the required action?
You must come to a complete stop before the stop line, crosswalk, or flagger, and remain stopped until signaled to proceed.
A flagger is waving you forward with their free hand in a beckoning motion. What does this mean?
This signal means "Proceed." It is clear for you to move forward through the work area at a reduced speed.
What is the purpose of orange traffic cones, drums, or barrels in a work zone?
These are channelizing devices used to mark the edges of the safe travel path, separate traffic from work areas, and guide drivers through lane shifts or closures.
What do the diagonal stripes on a barricade or vertical panel indicate?
They indicate the direction traffic should pass. Stripes pointing down to the right mean pass on the right; stripes pointing down to the left mean pass on the left.
What are vertical panels and where are they typically used?
They are tall, narrow, orange-and-white striped panels used to guide traffic, especially at night or in narrow spaces where larger devices like barrels would not fit.
Is it permissible to drive between cones or barrels to get ahead in traffic?
No. You must always stay within the marked travel lanes. Crossing over channelizing devices is illegal and dangerous.
A flagger is holding a "SLOW" sign or waving a flag in a slow, sweeping motion. What does this signal mean?
This signal means to reduce your speed immediately and proceed with caution.
You see a Type III barricade, which has multiple horizontal rails and extends fully across the roadway. What does it signify?
It signifies that the road is closed to all traffic. You must not drive around or under it; you need to find an alternate route or follow a detour.
