Construction and Work Zone Signs
Work zone signs warn of temporary conditions and direct you through or around them. Minnesota's exam asks about orange sign meaning, flagger authority, and work-zone speed and fine rules.
Core rules
- Construction and maintenance warning signs are orange diamonds with black legends; temporary regulatory signs in work zones are also orange.
- Common signs include Road Work Ahead, Flagger Ahead, Lane Closed Ahead, Shoulder Work, and Detour.
- A flagger's directions override normal signs and signals; slow down and be prepared to stop when you see Flagger Ahead.
- Posted work-zone speed limits apply as signed; Minnesota doubles fines for moving violations in work zones when workers are present.
- Channelizing devices such as cones, drums, and barricades mark the temporary path; do not cross them.
Worked example
You see an orange diamond reading Flagger Ahead, then a flagger holding a SLOW paddle. The correct action is to reduce speed immediately and prepare to stop, not to wait for the flagger to step into your lane. The sign is an advance warning, and the flagger controls your movement through the one-lane section. If the flagger signals you to stop, you stop even if the permanent signal ahead is green.
Traps
- Reading an orange sign as a yellow warning and failing to slow for workers.
- Assuming the work-zone speed limit ends at the last cone rather than at the End Road Work sign.
- Passing the flagger or driving around a barricade.
- Ignoring a Detour sign and following your usual route into a closure.