Yes, in many modern vehicles, the steering wheel can vibrate as part of the blind spot warning system. This feature is part of an enhanced safety system, often referred to as Lane Keep Assist, Blind Spot Monitoring, or Driver Assistance systems.

When the vehicle detects a car in your blind spot and you signal to change lanes, the steering wheel may vibrate as a tactile warning, alerting you to the potential danger. This vibration serves as an additional layer of feedback to help prevent collisions, especially if the driver may not notice visual warnings such as indicator lights or icons on mirrors or the dashboard.

The exact behavior, including the strength and duration of the vibration, can vary depending on the make and model of the vehicle. Some cars may also provide audio or visual alerts in combination with the steering wheel vibration. You can often customize or disable these settings through the vehicle's menu or safety settings.