Final answer:
Pointing your hand downward out of the car window is a hand signal that means slow down.
Step-by-step explanation:
The signal in which you point your hand downward out the window while driving means to slow down. Pointing your hand downward out of the car window is a hand signal that means slow down. This is one of the standard hand signals that drivers should know.
When a driver extends their arm out of the window and points their hand downward, they are indicating to other drivers that they are preparing to slow their vehicle or come to a stop.
Pointing your hand downward out of the car window is a hand signal that means slow down. Knowing and using the proper hand signals can improve road safety and help communicate intentions when turn signals are not functioning.