1. Don't parallel roads--sounds, monotonous view
2. Minimize cut and fills--construction costs
3. Switchbacks--none to minimum; if--hide, screen; manage water off
4. Clearing--minimized other than actual tread
5. Clearing window: 4'x8' for people, 6'x10' for horses--eyes, heads, bodies
6. Avoid potentially hazardous situations (cliffs, loose limbs, etc.)
7. Side slope: 10-70%
8. Slope: 5-10%; some 15% short stretches; 20% very short
9. Manage water: crowned, side sloped, water bar (deflector of wood/stone)
10. Follow contours
11. Road crossing: preferably none; if,-- at right angles to manage seeing; slow vehicles downs with signs, buzzers
12. Variety of views: diverse vegetation, change in sun/shade
13. Trail width: humans single=24"; horses single=36"
14. Avoid heavily used areas for traiheads--congestion, conflicts
15. If signing: readable, durable, consistent, quality presentation, maintained
16. Minimize access across areas containing water-- user comfort, impossible
maintenance situation
17. Bridges: minimum due to cost
18. Manage users rather than build trails for every user
19. Water bar: deflect water all the way off trail, use durable materials, mound or have nothing to trip, have a ditch that does not erode(rock)
20. Route around mature trees
21. If excessive water bars, consider realignment of trail
22. Trail tread 4 feet (passing, two-way)