Development of safety performance functions for Spanish two-lane rural highways on flat terrain
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- 作者：Laura Garach lgarach@ugr.es" class="auth_mail" title="E-mail the corresponding author ; Juan de Oñ ; a ; jdona@ugr.es" class="auth_mail" title="E-mail the corresponding author ; Griselda Ló ; pez griselda@ugr.es" class="auth_mail" title="E-mail the corresponding author ; Leticia Baena lbaenar@ugr.es" class="auth_mail" title="E-mail the corresponding author
- 关键词：Cumulative residuals ; Safety performance functions ; Two-lane rural highways ; Flat terrain ; Parsimonious models ; Fully models
- 刊名：Accident Analysis & Prevention
- 出版年：2016
- 出版时间：October 2016
- 年：2016
- 卷：95
- 期：part_PA
- 页码：250-265
- 全文大小：1439 K
文摘
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This study develops Safety Performance Function (SPF) analyzing cumulative residuals for two-lane rural highways.
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On the basis of cumulative residual analysis the sample were divided on ranges of the AADT variable for obtaining better models.
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In the AADT > 4000 veh/day database the percentage of heavy vehicles and the curvature change rate (CCR) have a large effect on the crash frequency.
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In the AADT < 4000 database, the percentage of shoulder and the driveway density have a high influence on crashes.