How can you verify that turn signals are functioning correctly?

Activating the turn signal and observing if the indicator lights are flashing on both the dashboard and the outside of the vehicle is the most effective way to verify that turn signals are functioning correctly. This method not only confirms the operational status of the turn signals but also checks for proper visibility from both inside and outside the vehicle, ensuring that other drivers can see your signaling intentions. The dashboard indicator lets you know that the system is engaged, while the external lights confirm that they are actually functioning and will communicate your direction changes to other motorists.

Other methods, while useful in some contexts, do not provide the same level of assurance. For example, visually checking bulb connections might show that the bulbs are in place but does not confirm that they are operational. Listening for clicking sounds might indicate that the turn signal circuit is activated, but without visual confirmation, it is still possible that external lights could be burned out. Inspecting the turn signal for physical damage could highlight issues, but it does not address whether the system is currently operational. Therefore, the most reliable method is to activate the turn signal and observe both internal and external indicators.