How does the surface friction of the ramp affect the aircraft towing speed?

The surface friction of the ramp directly impacts the maximum safe aircraft towing speed: lower friction necessitates lower towing speeds. A surface with low friction, such as one covered in ice, snow, or water, reduces the tires' ability to grip, diminishing both steering control and braking effectiveness. This requires a significantly lower towing speed to maintain control and prevent skidding. Conversely, a dry, high-friction surface allows for better tire grip, enabling more effective steering and braking. However, even on high-friction surfaces, towing speeds must remain within safe limits to avoid overstressing the tow bar and aircraft structures. Regardless of surface friction, adhering to the prescribed towing speed limits is critical to ensuring safe operations and preventing accidents.