When must a driver use turn signals in Missouri?

In Missouri, a driver is required to use turn signals at least 100 feet before turning or changing lanes. This requirement is in place to ensure that other drivers are aware of your intentions well in advance, promoting safety on the road. By signaling at least 100 feet ahead, you provide sufficient notice to pedestrians, cyclists, and other vehicles, allowing them to react accordingly.

Using turn signals too close to the action can lead to confusion or accidents, as other road users may not have enough time to interpret your movement. Proper signaling is an essential part of safe driving practices, helping to facilitate smoother traffic flow and reduce the risk of collisions.