Is a left turn on a red light permitted after making a complete stop on US installations?

A left turn on a red light is permitted after making a complete stop on U.S. installations under the condition that there are no posted signs prohibiting it. This practice aligns with traffic regulations in many states in the U.S., where a left turn from a one-way street onto another one-way street at a red light is generally allowed after coming to a complete stop and ensuring it is safe to proceed.

The option that states "unless posted otherwise" captures this nuance perfectly since installations may have specific traffic regulations that could differ from standard traffic laws. Therefore, as long as there are no signs indicating that such a maneuver is prohibited, it is permissible to make that left turn after stopping at a red light.

In summary, always look for posted signs that could dictate specific traffic rules on military installations, as they take precedence over general traffic laws.