
Total Traffic Volume & Performance in Macomb County, Michigan
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day16,301 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 5.1% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.9 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 28.0% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $93,536 |
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The average monitored road in Macomb County, Michigan carries 16,301 vehicles per day. Across its 904 miles of monitored roads, that adds up to 15,321,441 vehicle-miles traveled per day (≈5.6 billion per year). About 1 in 19 vehicles is a truck, fewer than the 1 in 13 across Michigan.
The busiest roads of any county in Michigan
Macomb's average daily traffic volume is 112% higher than the state average - 16,301 vehicles per day against 7,697 - suggesting more traffic load per road - heavy exposure for roadside retail, and tight road space for deliveries. Across the whole network, that travel is about 7.0% of Michigan's statewide total. In fact, Macomb has the highest average traffic volume of any county in Michigan, at 16,301 vehicles per day.
The average trip takes 31.9 minutes, on par with the state level. 76% of counties in Michigan have a longer average travel time than Macomb's 31.9 minutes.
At 52% higher than the state level, the 28.0% congestion ratio signals more pronounced congestion - expect markedly slower peak-hour deliveries and unreliable arrival times.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Macomb County, Michigan
| Traffic | vehicles per day31,789 |
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| Trucks | 7.8% |
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| Average travel time | 33.0 min |
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| Congestion ratio | 40.2% |
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| Drivers’ average age | 48.3 yrs |
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| Drivers’ average income | $94,604 |
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Highways carry a significant share of travel in Macomb County, Michigan: 32% of all vehicle-miles. The average highway carries 31,789 vehicles per day, 103% more than the average non-highway road in the same area, which carries 15,698 vehicles per day.
Highways make up 15% of the monitored road miles (138 miles, 1,467 segments), so they carry more than their share: 4,941,122 vehicle-miles traveled per day (≈1.8 billion per year).
By highway travel volume, that ranks Macomb in the top 5 counties in Michigan.
Lower highway truck share than 93% of counties in Michigan
The concentration of trucks on highways (7.8%) is 34% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
Macomb's highway truck share (7.8%) is lower than 93% of counties in Michigan. By raw truck volume, Macomb carries more highway trucks than 89% of counties in Michigan.

Non-highway Traffic in Macomb County, Michigan
| Traffic | vehicles per day15,698 |
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| Trucks | 3.8% |
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| Average travel time | 31.9 min |
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| Congestion ratio | 27.6% |
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| Drivers’ average age | 48.1 yrs |
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| Drivers’ average income | $93,121 |
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A little more than half of the driving in Macomb County, Michigan happens on local roads: 68% of all vehicle-miles. On the average non-highway road, that comes to 15,698 vehicles per day.
Spread over 766 miles and 37,714 segments, 85% of the road network, local roads carry a lighter load per mile: 10,380,319 vehicle-miles traveled per day (≈3.8 billion per year). About 1 in 26 vehicles on non-highway roads is a truck (3.8%).
Drivers from higher-income areas than 96% of counties in Michigan
Compared to highways, non-highway routes see 51% fewer trucks by share.
Non-highway congestion (27.6%) runs 51% higher than the state average, pointing to slower local traffic flow.
Macomb's average driver income is higher than 96% of counties in Michigan. Macomb's median driver age is lower than 74% of counties in Michigan.