Across Canada Trails - Track numberin...

Across Canada Trails - Track numbering System

All of the trails in Canada are organized by the NTS Tile grid.
Where the country is divided into longatitude columns & latitude rows.. typically 01-09 from the furthest south up to close to the arctic circle.
Then broken up into 16 tiles, lettered a-p, where 01 is "A" and 16 is "p".  then again broken into 16 tiles numbered 01-16. Having the '0' to make it 2 and 3 digits is important.

For those tracks that fall on edges... it's still split up. ... there wont be that many of those.  Afterall.. these tracks are very long.

That covers the 1st 7 digits. ... then we organize the tracks according to usage type.  There are 7 main uses... and numbered with the difficulty of surface..  and the 3 digit number, is the count of how many times a track falls into the NTS tile grid.  Where the route is from a West-east direction.

The tracks are also colour coordinated... so

yellow - 0001 would be to s(mile) 0 route. (TC highway shoulder)  'bike across canada route'
green - 1001 would be for the paved Cycling route
brown - 2001 would be the gravel - trekking cycling route
brown - 3001 would be the equestrian riding - gravel surface route
red - 4001 would be the Dirt surface Mountain Biking Route
red - 5001 would be the dirt Hiking route
purple - 6001 would be the ATV track route
blue - 7001 would be the Snowmobile route
blue - 8001 would be the  water / canoe kayak route

and the lighter shade of each is for the regional routing.