• KHALID MANZOOR
• Er. Ashish Kumar
• Sandeep Singla

Traffic comprises vehicles with diverse static and dynamic characteristics and all such vehicles use the same right-of-way without any physical segregation. Thus, the vehicles of the said heterogeneous traffic, under high volume conditions, move on Indian roads by sharing the available road space without sufficient lateral as well as longitudinal clearances. The lane-less movement further add to the complexity of analyzing/modelling heterogeneous traffic. Under heterogeneous traffic, the effect of speed reduction on vehicles of the same class and vehicles of different classes and their speed differentials along curves on road safety needs an investigation focuses on analyzing the influence of geometric design characteristics on traffic safety using bi-directional data on a divided roadway operated under heterogeneous traffic conditions in India. The study was carried out on a four lane divided inter-city highway in plain and rolling terrain. Statistical modelling approach by Poisson regression and Negative binomial regression were used to assess the safety performance as occurrence of crashes are random events and to identify the influence of the geometric design variables on the crash frequency. Negative binomial regression model was found to be more suitable to identify the variables contributing to road crashes. The study enabled better understanding of the factors related to road geometrics that influence road crash frequency. The study also established that operating speed has a significant contribution to the total number of crashes. Negative binomial models are found to be appropriate to predict road crashes on divided roadways under heterogeneous traffic conditions.

Traffic,Signal, Cost Optimization.

"Study On The Effect Of Geometric Design Consistency On Level Of Safety Of Intercity Roads", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.276-282, June-2019, Available :http://www.jetir.org/papers/JETIR1906D89.pdf

"Study On The Effect Of Geometric Design Consistency On Level Of Safety Of Intercity Roads", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp276-282, June-2019, Available at : http://www.jetir.org/papers/JETIR1906D89.pdf