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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day2,222 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 15.5% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 35.6 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 7.4% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 46.7 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $56,511 |
A typical monitored road in Lee County, South Carolina sees 2,222 vehicles per day, while its 309 miles of monitored roads together handle 1,076,636 vehicle-miles traveled per day (≈393 million per year). About 1 in 6 vehicles is a truck, well above the 9.5% across South Carolina - a freight-heavy mix.
Lee sees 68% lower average daily traffic volume than the state average (2,222 vehicles per day against 7,040), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.7% of South Carolina's statewide total. Lee carries less traffic than 89% of counties in South Carolina.
At 35.6 minutes, the average travel time is 7% higher than the state level. On travel time, Lee runs longer than 71% of counties in South Carolina.
Congestion runs 60% lower than the state level, at a ratio of 7.4%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
| Traffic | vehicles per day13,628 |
|---|---|
| Trucks | 19.4% |
| Average travel time | 63.4 min |
| Congestion ratio | 30.3% |
| Drivers’ average age | 45.7 yrs |
| Drivers’ average income | $66,378 |
Highways carry more than half of all travel in Lee County, South Carolina (63% of vehicle-miles). The average highway carries 13,628 vehicles per day, 576% more than the average non-highway road in the same area, which carries 2,017 vehicles per day.
Yet highways are only 15% of the road network, 48 miles in 43 segments, so each mile of them is 4.1 times as busy as the average road mile.
Highway truck concentration here runs 42% higher than the state average, at 19.4%. Highways here lean toward freight, so highway access is a real asset for logistics operators.
By truck concentration, highways here outrank 83% of counties in South Carolina. By raw truck volume, Lee carries more highway trucks than 69% of counties in South Carolina.
| Traffic | vehicles per day2,017 |
|---|---|
| Trucks | 8.8% |
| Average travel time | 35.1 min |
| Congestion ratio | 6.9% |
| Drivers’ average age | 47.7 yrs |
| Drivers’ average income | $47,478 |
A significant share of driving in Lee County, South Carolina, 37% of vehicle-miles, happens on local roads. A typical local road sees 2,017 vehicles per day.
Spread over 262 miles and 2,399 segments, 85% of the road network, local roads carry a lighter load per mile: 395,352 vehicle-miles traveled per day (≈144 million per year). Trucks make up 8.8% of non-highway traffic, about 1 in 11 vehicles.
Non-highway roads carry a truck concentration that's 55% lower than the highway network.
At 59% lower than the state level, the non-highway congestion ratio of 6.9% signals easier movement on local roads.
Lee's average driver income is lower than 71% of counties in South Carolina. Lee's median driver age is lower than 72% of counties in South Carolina.
The average daily traffic per road sets Lee County apart: 68% below the South Carolina average. Its truck share, by contrast, is 64% above.
| Metric | Lee County | South Carolina average | Difference |
|---|---|---|---|
| Traffic | 2,222 | 7,040 | -68.4% |
| Truck % (Total Traffic) | 15.5% | 9.5% | +63.6% |
| Truck % (Highway) | 19.4% | 13.7% | +42.0% |
| Avg. Travel Time | 35.6 min | 33.3 min | +7.0% |
Against the 4 nearest areas, Lee County carries 47.6% less traffic on a typical road and is 37.9% less congested; it has the quietest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Lee County | 2,222 | 15.5% | 1,076,636 | 35.6 min | 7.4% |
| Sumter County, South Carolina | 5,432 | 10.0% | 2,622,822 | 33.8 min | 15.6% |
| Kershaw County, South Carolina | 4,564 | 10.8% | 2,266,071 | 33.1 min | 11.1% |
| Darlington County, South Carolina | 3,819 | 9.9% | 1,999,701 | 32.6 min | 11.5% |
| Clarendon County, South Carolina | 3,155 | 18.3% | 1,778,904 | 32.5 min | 9.2% |
| South Carolina average | 7,040 | 9.5% | N/A | 33.3 min | 18.2% |
Average daily traffic volume places Lee County #41 of 46 in South Carolina - the bottom quarter of the state.
| Measure | Lee County | South Carolina rank |
|---|---|---|
| Traffic volume (AADT) | 2,222 | #41 of 46 |
| Highway vehicle-miles per day | 681,284 | #32 of 43 |
| Truck share on highways | 19.4% | #8 of 43 |
| Highway trucks per day | 2,649 | #14 of 43 |
| Average travel time | 35.6 min | #14 of 46 |
| Average driver income | $56,511 | #33 of 46 |
| Average driver age | 46.7 yrs | #33 of 46 |
Lee County ranks #8 of 43 on truck share on highways but #41 of 46 on average daily traffic volume - the two describe the same roads and are worth reading together rather than either on its own.
On their busiest stretches, the three busiest roads in Lee County carry 15,357 vehicles a day on average, 6.9 times the typical road in the county (2,222).
I 20 is the busiest road, at 28,371 vehicles a day, 5,514 of them trucks (19.4%). That is 2.6 times the next road, Main Street (11,008). It also carries the most trucks.
Trips using I 20 are long: a median of 63.4 minutes against 35.6 county-wide, the mark of a through route.
Drivers on Wisacky Highway come from neighborhoods with an average household income of $36,677, 35% below the county average of $56,511.
Main Street is busy with cars rather than freight: only 6.7% of its traffic is trucks, against 15.5% county-wide.
Delays build on I 20: its congestion ratio of 30% over free-flow time is well above the county's 7%.
Travel on Main Street's busiest stretch runs 27% over free-flow time, against 7% across the county, so expect slower peak hours.
Sumter Highway carries 3.0 times the county average at its busiest, 619 of them trucks (9.2%, below the county-wide 15.5%).
Hartsville Highway carries 2.5 times the county average on its busiest stretch, where the median trip lasts 36.4 minutes.
At 94% more than the county average, Wisacky Highway draws drivers from neighborhoods averaging $36,677 in household income.
N Main St is busy by local standards, at 74% more than the county average on its busiest stretch; trucks are 10.8% of it, below the county-wide 15.5%.
The average monitored road in Lee carries 2,222 vehicles per day, 68% less than the South Carolina average of 7,040.
Lee carries more highway trucks by raw volume than 69% of counties in South Carolina, at roughly 2,649 per day.
Trucks make up about 15.5% of all traffic in Lee County, South Carolina, rising to 19.4% on highways, where long-haul freight concentrates.
Weekday traffic has two busy windows: AM peak 7:00 AM–8:00 AM and PM peak 5:00 PM–6:00 PM - about 76% above the daily average.
Approximately 81% of highway traffic and 21% of non-highway traffic consists of vehicles whose trip originates outside Lee County, South Carolina. Most highway traffic here starts elsewhere, so the highways serve the wider region more than the local community.
The average trip in Lee takes 35.6 minutes, 7% longer than the South Carolina average of 33.3 minutes, delays at signals and congestion included.
Drivers on Lee roads have a median age of 47 years, and the median household income of the neighborhoods trips originate from averages $56,511, 24% below the South Carolina average.
I 20 carries the most, 28,371 vehicles per day on its busiest stretch, followed by Main Street (11,008), Sumter Highway (6,691), Hartsville Highway (5,658), Wisacky Highway (4,313). Figures are AADT, both directions combined.
I 20, with about 5,514 trucks per day on its busiest stretch, 19.4% of its 28,371 vehicles.
About 28,371 vehicles per day in both directions on its busiest stretch, including 5,514 trucks (19.4%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

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Historical traffic pattern databases
The same traffic breakdown for the areas closest to Lee County, South Carolina.
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