2013 Forest Service Trail Accessibility Guidelines (FSTAG)

7.4.11.2 Sign Contents.

Where new trail information signs are provided at trailheads on newly constructed or altered trails, regardless of whether the trail is accessible, the signs shall include at minimum the following information:

• Length of the trail or trail segment

• Surface type

• Typical and minimum tread width

• Typical and maximum running slope

• Typical and maximum cross slope

• A statement that the posted information reflects the condition of the trail when it was constructed or assessed, including the date of the construction or assessment 

Where more extensive trail information is provided (e.g., an aerial map of the trail and related facilities), the location of specific trail features and obstacles that do not comply with the technical provisions in 7.4 should be identified and a profile of the trail grade should be included.