Traffic Signals and Signal-Controlled Intersections
Signals control the right of way
A steady red light means stop before the crosswalk or stop line. Arkansas generally allows a right turn on red after a complete stop unless a sign prohibits it. A steady yellow means the signal is changing to red; stop if you can do so safely. A steady green means proceed if the intersection is clear.
Arrows change the rules. A green arrow is a protected movement; opposing traffic is stopped. A flashing yellow arrow is permissive: you may turn, but you must yield to oncoming traffic and pedestrians. A flashing red signal is treated like a stop sign: stop, yield, then proceed when safe. If a signal is dark because of a power failure, treat the intersection as an all-way stop unless an officer directs otherwise.
Traps: yellow does not mean speed up. A flashing yellow arrow is not protected. A green light does not give you the right to block an intersection. A right turn on red still requires a full stop and a check for pedestrians and cross traffic.
Worked example: You face a flashing yellow left arrow. You may enter the intersection to turn left only after yielding to oncoming vehicles and pedestrians. If traffic is heavy, wait for a gap or a protected green arrow.
Rule of thumb: solid = controlled or protected; flashing = proceed with caution and yield.