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Surface of the ramp: Is it too slippery? 2. Degree of incline: Is it too steep to attempt alone? 3. Length of ramp: Is it too long for your endurance? 4. Obstacles: Are there any obstacles on the ramp that would necessitate an attendant's assistance? ASSISTANCE IS ALWAYS RECOMMENDED WHEN GOING UP OR DOWN STEEP INCLINES. In order to prevent loss of steering control, or the possibility of tipping over backwards, an attendant is recommended when going up inclines greater than 6°. If it becomes nece