167.33(3)(e)7.7. Be able to safely board, ride, and deboard any lift serving an area open to tubing. 167.33(3)(e)9.9. Yield to other individuals engaged in tubing who are ahead or who are down the slope. 167.33(3)(e)10.10. Look uphill and yield to oncoming tubes before leaving the bottom of the hill at the end of a run. 167.33(3)(em)(em) Signs required; biking areas. In addition to the sign required under par. (b), each ski area operator offering biking shall post and maintain a sign that is at least 10 square feet in size at or near each entrance to a loading area of a lift that serves areas open to biking or at or near an entrance of an area open to biking that is not served by a lift. The sign shall contain the following warning: “WARNING — DUTIES OF INDIVIDUALS ENGAGED IN BIKING: Under Wisconsin law, each individual engaged in biking has a duty to do all of the following:
167.33(3)(em)3.3. Know the range of his or her ability and engage in biking within that ability. 167.33(3)(em)4.4. Assess the difficulty of the trails and terrains, including natural and man-made features, that are open to biking. Where possible, walk the trail or features prior to biking. 167.33(3)(em)6.6. Comply with any posted limits that are imposed on the type of bike or other equipment that may be ridden on a trail or portion of the ski area. 167.33(3)(em)8.8. Yield to other individuals engaged in biking who are ahead or who are down the slope. 167.33(3)(em)9.9. Be able to safely board, ride, and deboard any lift serving an area open to biking. 167.33(3)(em)11.11. Look uphill and yield to oncoming bikes before leaving the bottom of the hill at the end of the run or when entering a trail or slope.” 167.33(3)(f)(f) Signs required; trails and terrains. Each ski area operator shall designate the trails that are open for skiing or biking in its ski area and shall determine the difficulty level of each trail. The ski area operator shall post and maintain a sign at or near the beginning of each trail. The sign shall contain the name of the trail and all of the applicable wording and emblems specified in this paragraph to describe the difficulty level of the trail or terrain. The sign shall be at least 4 square feet in size. Each sign shall contain one or more of the following designations that are applicable: 167.33(3)(f)1.1. The word “easier” with an emblem consisting of a green circle. 167.33(3)(f)2.2. The words “difficult” or “more difficult” with an emblem consisting of a blue square. 167.33(3)(f)3.3. The words “most difficult” with an emblem consisting of a black diamond. 167.33(3)(f)4.4. The word “expert” or “extreme” with an emblem consisting of 2 black diamonds. 167.33(3)(f)5.5. The words “freestyle terrain” with an emblem consisting of an orange oval. 167.33(3)(f)6.6. The words “tree skiing — caution.” The sign shall contain the additional statement: “This back country trail is not groomed or patrolled — Never ski here alone.” 167.33(3)(g)(g) Areas of freestyle terrain; signs and barricades required. A ski area operator may designate an area as an area of freestyle terrain. A ski area operator that designates an area of freestyle terrain shall construct and maintain a barricade with fencing, roping, or similar means at the entrance to such an area. The opening in the barricade may not be wider than 30 feet. The ski area operator shall post and maintain a sign at or near the entrance of the area of freestyle terrain that is at least 3 square feet in size. The sign shall contain emblems consistent with signage recommended by a national ski areas association for use in areas of freestyle terrain. The sign shall contain the words “freestyle terrain.” 167.33(3)(h)(h) Lifts; signs required. For each lift that is used by individuals engaged in skiing and that does not serve any trail that is described under par. (f) as “easier,” the ski operator shall post and maintain, at or near the loading area for the lift a sign that is at least 10 square feet in size near or at the entrance of the loading area. The sign shall contain the following warning: “WARNING: This lift does not serve any trails that are “easier” (marked with a green circle emblem). All of the trails served by this lift are “difficult” or “more difficult” (marked with a blue square emblem), “most difficult” (marked with a black diamond emblem), “expert” or “extreme terrain” (marked with an emblem consisting of 2 black diamonds), or “freestyle terrain” (marked with an orange oval).”
167.33(3)(i)(i) Ski area vehicles; signs required. A ski area operator shall post and maintain signs on various trails or lift towers throughout the ski area that are at least 4 square feet in size that contain the following statement: “Caution: Ski area vehicles may be in operation at any time.”