I've also had challenges trying to cycle safely on the "multiple use" trails. In particular, people with unrestrained dogs pose great threats. In a recent incident, a lady with two unrestrained dogs was off trail. I did comment "on your left" which has been the common comment for decades." I'm not certain she heard it. As I passed her, the second dog, to which she was NOT paying attention, crossed the trail behind her directly in my path. I had noted 10.1 mph on my speedometer as I approached and I was slowing. I screamed to let her and the dog know I was about to hit the dog. This angered the dog and it came barking after me. No comment from the carekeeper. Having been bitten a couple of weeks prior by another unrestrained dog on a trail. I was leery and scared. The ensuing comments from her were all about my "flying by" and that she did not need to leash the dog since it was under voice control. With no voice to offer control, isn't a leash required? What's a safe speed for cyclists?