Joint Impact of Rain and Incidents on Traffic Stream Speeds

Table 2

Parameters’ estimates of the mixture of log-normal regression model.

Parameter	First component (congested regime)	Second component (free-flow regime)
Intercept	−0.5802	0.0860
Precipitation coefficient	0.0480	−0.1250
Ratio of closed lanes coefficient	−1.0075	−0.0762
Standard deviation	0.6544	0.0636
Mixing probability (λ)	0.0987	0.9013