European Quake IV Community since 2006
Ramp Jumping
Ramp Jumping is another technique that is very straightforward and simple in concept that we will all be working to master for years to come.
The only trick to it is you must jump just at the peak of the ramp. Don’t assume that because the “ramp” (which may just be a bump) is small you won’t get any height or distance. The smaller the ramp the trickier the timing will be, but all the better because it may be unexpected.
That’s basically it in a nutshell, though there is much more to it in terms of practical application. This is a very brief description of a movement skill that is very subtle and hard to use effectively in a game situation. Good luck!
(Guide by mesh from truecarnage.com)