Type I

• Design trails to the highest standards of width and provide smooth gentle grades and curves for all levels of ability, focus on family use.
• Consider using horse trails and old roads.
• Design trail systems 30 - 130 kilometres in length.
  
  
• Intensive Recreation Zone
• Natural Environment Zone

• Design trails to the minimum standards of width and gradients to provide more challenging intermediate to advanced snowmobiling.
• Allow for narrow clearing. widths, steeper grades and sharper curves.
• Consider using existing horse trails, old roads.
• Use Type 11 trails as routes through the park or to Type III areas.
  
  
• Natural Environment Zone

• Designate routes or provide open play areas with no developed trails, for example on snowfields or selected meadows where environmental impacts are minimal.
• Assume a high degree of skill and experience.
  
  
• Natural Environment Zone

• Plan trails to provide access to scenic or natural recreation feature areas.
  
  
• Plan winter trail use for snowmobiling only. Snowmobiling is generally not compatible with cross-country siding or snowshoeing.
  
  
• Use a multiple loop layout for day and partial-day use. Plan a short, easy loop of approximately 1.5 km near the trailhead and separate from the main trail system to allow space for novice riders to receive instruction as well as for groups to take turns using one machine.
  
  
• Develop loops for partial day use of 24-40 km for novices, 40-65 km for intermediates and 65-80 km for advanced users. Plan full day routes of 45-80km for novices, 80-120 km for intermediates and 120-180 km for- advanced users.
  
  
• Evaluate potential winter hazards prior to route development. Consider snow depth, avalanche potential, light conditions, night use, cliffs, gates, fences or water crossings. Avoid locating trails within 10m of hazardous areas such as cliffs, boulders, embankments, kettle holes, etc. If there is no alternative route, provide signs to wam of natural hazards.
  
  
• Monitor snow conditions of the proposed route during the winter prior to trail development to identify areas of drifting. Design the trail to reflect the most adverse drifting and slope conditions expected for any portion of the trail.
  
  
• Design trail crossings and junctions at right angles and place signs for all directions of travel. Use level grades on approaches to crossings. Avoid intersecting more than two trails at any one junction.
  
  
• Note the sun orientation in relation to trail alignment and avoid, when possible, long trail sections where the sun's glare hinders vision.

• Allow for variety in the vertical alignment. Plan vertical alignment in proper combination with horizontal alignment to control speed for user safety. Stay within a 25% grade limit. Exceed this limit only for a short distances. Ensure the approaches to steep trail sections are straight and gradual. Design the trail to provide smooth transitions between gradients.
  
  
• Use a maximum sustained grade of 8% for easiest trails to 15% for more difficult trails. Do not exceed a maximum grade on short pitches of 25% for easiest trails and 35% on most difficult trails.

• Clear easiest trails to a width of 5 m and difficult trails to 4.2 m.
  
  
• Clear all trails to a minimum height of 2.5 m. Allow extra clearing room for drooping snow laden branches.
  
  
• Allow for a groomed width of between 3 m and 3.6 m. Design turning radii no tighter than 7.6 m.

• Locate trails in areas where acceptable levels of environmental impact are expected.
  
  
• Avoid locating snowmobile trails near critical winter or spring habitat for large mammals. Pay particular attention to sheep, goat, moose and caribou habitat. Avoid raptor nest sites.
  
  
• Avoid spring wildlife travel corridors.
  
  
• Avoid locating snowmobile trails in areas where a lack of snow may cause vegetation damage. Avoid south facing slopes where snow melts early.
  
  
• Locate trails to avoid or minimize noise or engine exhaust fume effects on other winter users, such as cross-country skiers or snowshoers.