During a conditionally automated journey, DRIVE PILOT allows the driver to take their mind off the traffic and focus on certain secondary activities . When DRIVE PILOT is active, applications can be enabled on the vehicle's integrated central display that are otherwise blocked while driving. On suitable freeway sections and where there is high traffic density, DRIVE PILOT can offer to take over the dynamic driving task, up to speeds of 40 mph. The control buttons required for this are located on the steering wheel rim, on the left and right above the thumb recesses. Once conditions are suitable, the system indicates availability on the control buttons. When the driver activates DRIVE PILOT, the system controls the speed and distance, and effortlessly guides the vehicle within its lane. The route profile, events occurring on the route and traffic signs are correspondingly taken into consideration. The system also reacts to unexpected traffic situations and handles them independently through evasive maneuvers within the lane or by braking maneuvers for example.
If the driver fails to take back control even after increasingly urgent prompting and expiration of the takeover time (e.g., due to a severe health problem), the system brakes the vehicle to a standstill in a controlled manner while engaging the hazard warning lights. Once the vehicle has come to a standstill, the Mercedes-Benz emergency call system is activated and the doors are unlocked to ensure the vehicle is accessible for first responders.