Driverless cars use sensors and computer technology to detect traffic lights and drive autonomously. Technologies like ABS, ESC, and automated cruise control improve safety by taking control of braking and maintaining distance from other vehicles. Fully autonomous vehicles could reduce accidents caused by human error by handling all aspects of driving under the guidance of computer systems and sensors that detect roads and obstacles. However, hackers may potentially hack into connected systems and change routes or disable vehicles, presenting a security risk. Overall, driverless cars aim to improve safety by replacing human errors with computerized driving systems.