Safety performance functions for Two-Lane urban arterial segments

Name: Safety performance functions for Two-Lane urban arterial segments
Author: Bartın, Bekir Oğuz, Ozbay, K., Xu, C.

İsim	Safety performance functions for Two-Lane urban arterial segments
Yazar	Bartın, Bekir Oğuz, Ozbay, K., Xu, C.
Basım Tarihi:	2023-11
Basım Yeri	- Elsevier
Konu	Calibration factor, Generalized linear models, Urban arterials, Highway safety manual, Safety performance functions
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0925-7535
Kayıt Numarası	1a70b2b1-f439-4f58-81f9-9e05f9b71040
Lokasyon	Civil Engineering
Tarih	2023-11
Notlar	C2SMART ; Ozyegin University ; U.S. Department of Transportation ; New Jersey Department of Transportation ; New York University
Örnek Metin	This paper presents the calibration and development process of the safety performance function for the undivided two-lane urban and suburban arterial segments in New Jersey. Data requirements, the availability of required data, and the data processing and extraction methods are presented, along with detailed results of the calibration and development process. Negative binomial, Poisson, zero-inflated Poisson and Hurdle models were generated using the development database. The best model fit was based on likelihood ratio test, AIC and BIC statistics, Vuong test and rootograms. The test database was used to calculate the calibration factor for U2 segments. The predictions of the location-specific count models were then evaluated and compared to those of calibrated Highway Safety Manual model, using the test dataset. The validation test results showed that the negative binomial and hurdle models exhibited better performance in terms of absolute residuals and absolute Pearson residual statistics. This paper also shows the impact of crash location information on analyses results, and underlines that efforts made to manually extract the missing required data can easily be offset by the inaccuracies in crash frequency databases, and the thresholds used to identify intersection related crashes.
DOI	10.1016/j.ssci.2023.106284
Cilt	167

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Safety performance functions for Two-Lane urban arterial segments

Yazar Bartın, Bekir Oğuz, Ozbay, K., Xu, C.

Basım Tarihi 2023-11

Basım Yeri - Elsevier

Konu Calibration factor, Generalized linear models, Urban arterials, Highway safety manual, Safety performance functions

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0925-7535

Kayıt Numarası 1a70b2b1-f439-4f58-81f9-9e05f9b71040

Lokasyon Civil Engineering

Tarih 2023-11

Notlar C2SMART ; Ozyegin University ; U.S. Department of Transportation ; New Jersey Department of Transportation ; New York University

Örnek Metin This paper presents the calibration and development process of the safety performance function for the undivided two-lane urban and suburban arterial segments in New Jersey. Data requirements, the availability of required data, and the data processing and extraction methods are presented, along with detailed results of the calibration and development process. Negative binomial, Poisson, zero-inflated Poisson and Hurdle models were generated using the development database. The best model fit was based on likelihood ratio test, AIC and BIC statistics, Vuong test and rootograms. The test database was used to calculate the calibration factor for U2 segments. The predictions of the location-specific count models were then evaluated and compared to those of calibrated Highway Safety Manual model, using the test dataset. The validation test results showed that the negative binomial and hurdle models exhibited better performance in terms of absolute residuals and absolute Pearson residual statistics. This paper also shows the impact of crash location information on analyses results, and underlines that efforts made to manually extract the missing required data can easily be offset by the inaccuracies in crash frequency databases, and the thresholds used to identify intersection related crashes.

DOI 10.1016/j.ssci.2023.106284

Cilt 167