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Traffic | vehicles per day13,575 |
|---|---|
Trucks | 6.3% |
Average travel time | 31.9 min |
Congestion ratio | 30.6% |
Drivers’ average age | 43.5 yrs |
Drivers’ average income | $96,192 |
The average monitored road in Charleston County, South Carolina carries 13,575 vehicles per day. Across its 858 miles of monitored roads, that adds up to 11,678,516 vehicle-miles traveled per day (≈4.3 billion per year). About 1 in 16 vehicles is a truck, fewer than the 1 in 11 across South Carolina.
Charleston's average daily traffic volume is 93% higher than the state average - 13,575 vehicles per day against 7,040 - suggesting more traffic load per road - prime passing trade for storefronts, with more competition for road space. In total volume terms, its road network carries about 7.9% of South Carolina's statewide total of vehicle-miles. In fact, Charleston has the highest average traffic volume of any county in South Carolina, at 13,575 vehicles per day.
At 31.9 minutes, the average travel time matches the state level closely. Its average travel time of 31.9 minutes is shorter than 93% of counties in South Carolina.
The congestion ratio of 30.6% is 69% higher, pointing to more pronounced congestion than the state level - expect markedly slower peak-hour deliveries and unreliable arrival times.
| Traffic | vehicles per day27,404 |
|---|---|
| Trucks | 8.3% |
| Average travel time | 33.5 min |
| Congestion ratio | 54.9% |
| Drivers’ average age | 43.9 yrs |
| Drivers’ average income | $94,172 |
Highways carry about half of all travel in Charleston County, South Carolina, 53% of vehicle-miles. The average highway carries 27,404 vehicles per day, 131% more than the average non-highway road in the same area, which carries 11,875 vehicles per day.
Highways make up 28% of the monitored road miles (243 miles, 2,063 segments), so they carry more than their share: 6,202,067 vehicle-miles traveled per day (≈2.3 billion per year).
By highway travel volume, Charleston ranks first in South Carolina.
The concentration of trucks on highways (8.3%) is 40% 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.
By truck concentration, highways here trail 86% of counties in South Carolina. By raw truck volume, Charleston carries more highway trucks than 52% of counties in South Carolina.
| Traffic | vehicles per day11,875 |
|---|---|
| Trucks | 4.1% |
| Average travel time | 31.7 min |
| Congestion ratio | 27.7% |
| Drivers’ average age | 43.2 yrs |
| Drivers’ average income | $98,373 |
Local roads carry about half of all travel in Charleston County, South Carolina, 47% of vehicle-miles. On the average non-highway road, that comes to 11,875 vehicles per day.
Local roads make up 72% of the monitored road miles (615 miles in 16,783 segments) but carry less than their share of travel: 5,476,450 vehicle-miles traveled per day (≈2.0 billion per year). About 1 in 24 vehicles on non-highway roads is a truck (4.1%).
Non-highway roads carry a truck concentration that's 50% lower than the highway network.
At 64% higher than the state level, the non-highway congestion ratio of 27.7% signals more friction on local roads.
Trips here originate from the highest average driver income in South Carolina, at $96,192. Charleston's median driver age is lower than 98% of counties in South Carolina.
Mobile device location data (anonymized and aggregated)
Road sensor networks and traffic counters
Historical traffic pattern databases
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