Highway Level of Service (LOS) Calculator
Compute the density and Highway Capacity Manual level of service (A through F) of a traffic lane from hourly volume and mean travel speed.
How to Use the Highway Level of Service (LOS) Calculator
- Enter hourly traffic volume in passenger cars.
- Enter mean speed in km/h.
- Click Calculate to see density and LOS band.
Casos de Uso
- •Highway capacity analysis.
- •Traffic impact studies.
- •Transportation planning homework.
Fórmula
Density (pc/km/lane) = Volume (pc/h/lane) / Speed (km/h). LOS bands: ≤7 A, 7–11 B, 11–16 C, 16–22 D, 22–28 E, >28 F.
Preguntas Frecuentes
Where do the thresholds come from?
They follow the U.S. Highway Capacity Manual 6th Edition bands for basic freeway segments, converted to passenger cars per kilometre per lane.
What is a passenger car unit?
An equivalence factor that converts heavy vehicles to an equivalent number of passenger cars so the single-lane density is comparable across fleets.