Major Road Misalignments

Major Road Misalignments can occur in three ways:

1.The blue route line is more than 50 meters away from the present-day ground truth road, ,
2.The blue route line ignores the existence of a roundabout/traffic circle that is more than 50m in diameter at its widest point, or
3.The blue route line is misaligned with a turn channel. If the turn channel

is greater than 100m long, the route line must indicate that it is entering the turn channel at an appropriate place in the route.

Example:

In this example, we can see that the user is being directed to take an exit off the highway.

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The right lane is a turn channel separated from the rest of the highway by road markings that include non-lane space. Using the ruler tool in the rating app, we can see that the length of the non-lane space is more than 100m long, and the route line does not enter the channel until far too late. This is a Major Road Misalignment.

Minor Road Misalignments

There is a misalignment with the turn channel but less than 100 meters at step 1 (pin 49.762588,4.647738), hence not considered a MNE but a non MNE issue.

Tip : Always use a tool to measure distances. Start measuring from the beggining of the turn channel and stop when the line become solid and make the turn illegal

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