The Orange Zone That Changes Mid-Block
You are driving through a summer road-reconstruction corridor on a four-lane urban arterial. At the start you passed orange signs reading "ROAD WORK AHEAD" and "REDUCED SPEED 35." The normal limit is 45. Halfway through, the lane configuration shifts: a worker in a high-visibility vest is holding a "SLOW" paddle, and ahead the right lane is closed by orange-and-white drums tapering into the left lane. You also notice the orange speed sign now reads 25, and there is a flagger up ahead. It is midday, sunny, and you see only two workers, one of whom appears to be on a phone away from the cones. Traffic is light.
1. Which speed applies as you pass each sign, and can you treat the reduced limits as optional because few workers are visible?
Read the worked answer
Each posted regulatory speed in the work zone applies from the point it is posted forward until a sign changes it or the zone ends. So you follow 35 where that sign is in force, then drop toward 25 when the later orange 25 sign and the "SLOW" paddle appear. The orange color marks the area as a work zone; the black-on-orange speed numbers are still regulatory limits, not suggestions.
Few visible workers does not make the limit optional. Work-zone speed limits are set for the corridor's altered geometry - narrowed lanes, drums, uneven pavement, equipment - not just for the number of people you can count. A worker on a phone is still a pedestrian in the roadway who could step out. Treat the posted number as binding and drive to the geometry, not to your headcount of workers.
2. The flagger is ahead and the lane taper is tight. What is the correct sequence of actions, and what does the flagger's authority mean for you?
Read the worked answer
Sequence: (1) slow to the posted limit before reaching the taper, not inside it; (2) merge left early and smoothly once the drums indicate the closure, using mirrors and a head check; (3) increase following distance because the lane is narrow and stopping sight is reduced; (4) watch the flagger and obey the paddle or hand signal.
The flagger's direction overrides the normal right-of-way and even the signal or sign indication in the work zone - a flagger is authorized to stop and release traffic. If the flagger shows "SLOW," proceed cautiously; if they show "STOP," stop and wait even if the light or your lane otherwise says go. The reasoning: the flagger sees hazards (equipment swings, unseen workers) you cannot, so their signal is the controlling instruction.