Final answer:
It is not reliable to rely on another driver's signal light to indicate their actual intention because drivers may not use their signal lights correctly or deliberately mislead others. Always be cautious and pay attention to other drivers' actions.
Step-by-step explanation:
When driving, it is important not to rely solely on another driver's signal light to indicate their actual intention. This is because drivers may not always use their signal lights correctly or may forget to use them at all. Additionally, some drivers may intentionally mislead others by using their signal light incorrectly or not using it at all.
For example, a driver may forget to turn off their signal light after changing lanes, causing confusion for other drivers. Or, a driver may fake a turn signal to deceive another driver and gain an advantage in traffic.
Therefore, it is crucial to always be cautious and aware of other drivers' actions, even when they are using their signal lights. Pay attention to their driving behavior, the position of their vehicle, and their speed to determine their true intention.