What kind of violation might prompt an officer to initiate contact with the driver?

All of the listed violations can serve as legitimate reasons for a police officer to initiate contact with a driver.

Failure to signal is a common traffic violation that can indicate a lack of attention to the rules of the road, potentially leading to unsafe driving behaviors. Officers may approach to address this as it could impact the safety of the driver and others on the road.

Expired registration signifies that a vehicle may not be properly insured or that the owner has not fulfilled legal requirements for vehicle operation. This presents a reason for law enforcement to engage with the driver to ensure compliance with vehicle registration laws.

Excessive speeding is a more serious infraction that poses direct danger to the driver, passengers, and other road users. Speeding not only increases the risk of accidents but also exhibits reckless driving behavior, warranting immediate attention from law enforcement.

Because each of these violations represents a different aspect of traffic law and road safety, an officer may find it necessary to contact the driver in any of these scenarios, making the selection of "All of the above" the appropriate answer.