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- [3] Safety effects of the conversion of rural two-lane roadways to four-lane roadways ITE JOURNAL-INSTITUTE OF TRANSPORTATION ENGINEERS, 2000, 70 (04): : 37 - 41
- [5] Analysis of factors affecting of head-on crashes -: Two-lane rural highways in Connecticut SAFETY DATA, ANALYSIS, AND EVALUATION, 2006, (1953): : 137 - 146
- [6] Safety effects of the conversion of rural two-lane to four-lane roadways based on cross-sectional models Transp Res Rec, 1665 (35-43):