Research Article

Determining Causal Factors of Severe Crashes on the Fort Peck Indian Reservation, Montana

Table 2

List of possible interaction terms.

Lighting condition and impaired driving

Lighting condition and weather condition

Lighting condition and overturn

Lighting condition and collision with a ditch/embankment

Weather condition and impaired driving

Weather condition and overturn

Weather condition and collision with a ditch/embankment

Impaired driving and overturn

Impaired driving and collision with a ditch/embankment