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- W604127810 abstract "This study developed lane width crash modification factors (CMFs) for urban curb-and-gutter multilane roadways with asymmetric lanes, i.e., outside lane wider than inside lane. The roadway segments used were urban four-lane with a raised median (4D) and with a two-way left-turn lane (5T). Three crash categories were evaluated: KABCO (Fatal (K), incapacitating-injury (A), non-incapacitating injury (B), possible injury (C) and property damage only crashes (O)), KABC (Fatal (K), incapacitating-injury (A), non-incapacitating injury (B), and possible injury crashes (C)), and PDO (property damage only) crashes. A cross-sectional method was used as it was the most practical and feasible for this study. Six-year (2004 to 2009) of segment crashes were examined. The analysis involved statistical modeling using the negative binomial model, whose coefficients were used to develop multiplicative CMF equations for a combined effect of variable inside and outside lane width. In summary, the results show that reducing the inside lane width from 12 ft to 11 ft does not affect estimated crash frequency of four-lane with a raised median segments for all three crash categories, and PDO crashes for four-lane with a two-way left-turn lane segments. However, narrowing the inside lane width appears to be associated with increased estimated KABCO and KABC crashes for four-lane with a two-way left-turn lane sections. The results also suggest that widening the outside lane from the baseline 12 ft causes a reduction in estimated crash frequency for all three crash categories (KABCO, KABC, and PDO) for both four-lane with a raised median and four-lane with a two-way left-turn lane segments. Language: en" @default.
- W604127810 created "2016-06-24" @default.
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- W604127810 date "2014-01-01" @default.
- W604127810 modified "2023-09-26" @default.
- W604127810 title "Lane width crash modification factors for curb-and-gutter asymmetric multilane roadways: statistical modeling" @default.
- W604127810 hasPublicationYear "2014" @default.
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