What feature of the HMMWV assists in low-speed maneuvers?

The feature of the HMMWV that assists in low-speed maneuvers is power steering. This system is designed to enhance the driver's ability to control the vehicle, especially during tight turns or when navigating through difficult terrain. Power steering reduces the effort needed to turn the steering wheel, allowing for more precise handling at lower speeds, which is critical in situations where maneuverability is paramount, such as in urban environments or off-road situations.

In contrast, while the advanced braking system, all-wheel drive, and traction control contribute to overall vehicle performance and safety, they do not specifically focus on improving low-speed maneuverability in the way that power steering does. The advanced braking system primarily enhances stopping power and control at both low and high speeds. All-wheel drive provides improved traction and stability, particularly in off-road conditions but does not directly affect steering mechanics. Traction control helps prevent wheel spin during acceleration but is not specifically tailored for low-speed directional control. Thus, power steering stands out as the critical feature for effectively executing low-speed maneuvers in the HMMWV.