For the driver, INFINITI's advanced assistance systems can support and inform when needed. The QX55 offers INFINITI's advanced ProPILOT Assist driver-assistance system to help steer, brake, center the vehicle in its lane, and accelerate in certain conditions to help reduce driver fatigue and enhance comfort. ProPILOT Assist combines Intelligent Cruise Control with Full-Speed Range and Hold with Steering Assist to deliver a more comfortable ride in stop-and-go traffic or long-distance highway drives. Unlike similar systems from competitors, no subscription fee is required to keep the system active.