Research Article

Analyzing Traffic Crash Severity in Work Zones under Different Light Conditions

Table 4

Decision rules for crash severity of dark-not-lighted condition.

RulesNodeRules [if (and…and…)]then (%)

6If (SL <= 40) and (D & A =Y)Injury72.7
9If (SL > 40) and (WC = NC) and (TCD = N)PDO93.5
11If (SL <= 40) and (D & A = N) and (CT = NHO)PDO81.5
14If (SL <= 40) and (D & A = Y) and (LC = AI)Injury100