What does a steady red arrow indicate to drivers?

A steady red arrow signals that drivers must come to a complete stop and cannot proceed in the direction that the arrow points. This means that if the arrow is pointing left, for instance, drivers intending to make a left turn must stop and wait for the signal to change. The purpose of this is to control traffic flow and ensure safety at intersections, allowing other vehicles and pedestrians to clear the way before the turning vehicle can proceed.

This traffic control device is crucial in managing turns at intersections, as it helps prevent accidents that could occur from drivers turning when it is not safe to do so. While there are different rules surrounding traffic signals, the red arrow specifically prohibits movement in the direction it indicates until it changes to a green signal or allows for the turn under certain conditions, such as having a green arrow or following the guidelines of a sign that permits a turn on red under specific circumstances.