LEVEL OF SERVICE CRITERIA FOR TWO-WAY STOP-CONTROLLED INTERSECTIONS1
| Level of Service | Average Control Delay |
|---|---|
| A | ≤ 10.0 Seconds Per Vehicle |
| B | > 10.0 and ≤ 15.0 Seconds Per Vehicle |
| C | > 15.0 and ≤ 25.0 Seconds Per Vehicle |
| D | > 25.0 and ≤ 35.0 Seconds Per Vehicle |
| E | > 35.0 and ≤ 50.0 Seconds Per Vehicle |
| F | > 50.0 Seconds Per Vehicle |
1 Transportation Research Board, Highway Capacity Manual 2022, National Research Council, Washington, DC, 2022.