It is not just multi-use trails that are abused by ignorant ______..... Our fav IMBA built trails are in a park that boasts multi-use trails and BIKE ONLY (freeride features); both clearly marked by signs and on the trail maps. Twice I have screamed around a berm to find hikers sauntering near the bottom of a jump! Additionally, last week -there was an older couple walking up and down a seesaw... it would be funny except as I explained to them...the young adult males who fly past here are going WAY faster than I....and when they cream you whose fault is it? The signs say "biking only!"