I hate second hand smoke.
So this legislation sounds good to me.
The Recreation and Parks District board in Pleasant Hill, California is planning to ban smoking on hiking trails within the district, as well as other open spaces like parks. …
If the Pleasant Hill no-smoking ordinance is passed, it will not be the first in California of it’s kind. Districts like Hayward and Livermore already have similar ordinances in place. …
Daily Hiker – California district to ban smoking on hiking trails
It’s nice to see California politicians have enough free time to work on forward thinking proposals like this. 🙂
besthike.com 
I’m not a smoker, and smoking on hiking trails doesn’t bother me. I assume this is being done to prevent forest fires. In any case, this would be hard to enforce.