Level of Service Calculator

LOS A: Free flow, minimal delay
LOS B-C: Stable flow, acceptable delays
LOS D: Approaching unstable flow
LOS E: Unstable flow, at capacity
LOS F: Forced flow, breakdown conditions

LOS Analysis

HCM 2016

Control Delay (s/veh) Average delay per vehicle

Movement Type Type of movement being analyzed

Click to load common delay values

LOS is a qualitative measure of traffic operational conditions:

Standard: Based on HCM 2016 methodology