Why might a driver opt not to signal when changing lanes?

Drivers may choose not to signal when changing lanes because they believe it is unnecessary due to low traffic conditions. In situations where a driver perceives that fewer vehicles are present, they might assume that their lane change will not affect other drivers significantly, leading to a misconception that signaling is not required. This reasoning overlooks the importance of communication on the road, regardless of traffic density. Signaling is a critical part of safe driving as it informs other drivers of your intentions, contributing to overall road safety and reducing the likelihood of accidents. By disregarding signaling because of low traffic, a driver is not fully adhering to the principles of defensive driving, which emphasize awareness and communication with other road users.