Controller Area Network (CAN) bus is a vehicle bus standard which is designed to allow microcontrollers and other electronic devices to communicate with each other within a vehicle without a host computer. CAN bus is a message-based protocol, designed specifically for automotive applications but it is also used in other areas such as aerospace, maritime, industrial automation and medical equipment. CAN is a standard protocol for efficient and reliable communication between sensor, actuator, controller and other nodes in real-time applications.