Indian-Origin Researcher Invents Satellite-Free Navigation System Which Uses Earth’s

[Michigan Swamp Buck]

Around these parts, you don't even need a map to find your location. Most counties have a baseline road running east and west about the middle of the county. East-west roads, north and south of baseline, are mile roads (one mile apart) or numbered roads (1st, 2nd, etc) that are an eight of a mile apart. These road numbers go up north of baseline and south of baseline. Addresses that are even numbered are on the south side of east-west roads and on the east side of north-south roads with odd numbered addresses being the opposite. The addresses on north-south roads are based on the east-west numbered roads.

Confusion may come because north-south roads can be named just about anything, but are usually a mile apart. Also, many main roads regardless of direction have a couple of names and or numbers that can change as you travel on them.