Approach angle
determines the steepest step that a vehicle can approach
without its nose grounding.
The closer to 90° the better.
Departure angle
determines the steepest step that a vehicle can drive off
without its tail dragging.
The closer to 90° the better.
The
Foers Ibex
(right) has excellent approach and departure angles.
Ramp-over angle
determines the sharpest ridge that a vehicle
can drive over without its belly grounding.
The sharper this angle is the better.
In this case the LWB
Defender
(right) is resting on its chassis, the tyres barely touching the ground,
i.e. no traction.
It had to be man-handled over.