AWD stands for “All-Wheel Drive.” It is a type of drivetrain that sends power to all four wheels of a vehicle, rather than just the front or rear wheels. This system can provide improved traction and stability, especially on slippery or uneven surfaces. There are two main types of AWD systems: full-time and part-time. A full-time AWD system is always engaged and sends power to all four wheels at all times. A part-time AWD system can be switched between two-wheel drive and all-wheel drive, depending on the road conditions. AWD systems can use a variety of different technologies to distribute power to the wheels, such as mechanical or electronic differentials, and transfer cases. Some of the newer systems use advanced technologies such as torque vectoring, which can control the amount of power sent to each wheel for optimal traction and handling. AWD systems are typically found in SUVs, crossovers, and some high-performance sports cars, and are usually used for all-weather, off-road or high-performance driving conditions.