An electric wheelchair can make it both ways IMO. But this needs something that prevents you from tipping back/forward. A normal wheelchair doesn't stand a chance, even with two people helping.
In a traditional wheelchair, tip yourself onto your back so the friction will slow you down, then control the wheels with your hands to slow your descent further.
Even with help, I can't see how you would make it down this ramp
Fast
An electric wheelchair can make it both ways IMO. But this needs something that prevents you from tipping back/forward. A normal wheelchair doesn't stand a chance, even with two people helping.
In a traditional wheelchair, tip yourself onto your back so the friction will slow you down, then control the wheels with your hands to slow your descent further.
Sorry about the back of your seat.
On feet I'm confident I could manage it. On wheels I think that's death for everyone involved.