Detroit Traffic Volume Map

Screen Shot 2015-11-12 at 3.21.45 PM

SEMCOG’s traffic volume map represents Average Annual Daily Traffic (AADT) for roads in Southeast Michigan that are eligible for Federal Funds.

The three types of AADT’s represented:

1. Observed – actual counts taken on the segment

2. Interpolated – calculated based on adjacent counts

3. Default – calculated based on county, number of lanes, and functional class.

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