Development of a Safety Evaluation Model for Provincial Highway

Abstract

Provincial highway safety is one of the most important issues in transportation. To evaluate or assess the safety performance of provincial highway, traffic crash analysis or traffic conflict analysis has been used for a long history. However, it is very difficult and time-consuming to obtain historical crash data or traffic conflict data. This study analyzes the provincial highways' accident data during 2006–2010, and the characteristics of provincial highway have been investigated; in addition the influencing elements are identified. A comprehensive approach is introduced to evaluate provincial highway safety performance and corresponding models are developed considering the accidents, geometrics, facilities, and traffic environment. The approach will also result in a safety index to indicate the safety performance level of the provincial highway. In this paper, the approach (called safety evaluation approach) is practically applied to evaluate the safety performance of some provincial highways in Hebei Province. Results from the real application indicate that the approach has good applicability and can be used by field safety engineers.

Design of Decision Support System for Road Freight Transportation Routing Using Multilayer Zero One Goal Programming

“…The standard criterion for physical road freight transportation route evaluation of shoulder width is shown in Table 4. This criterion conforms to [9,10,23] who specified the risk assessment level for shoulder width, the risk is increased when shoulder width decreases. According to Zegeer and Council [22], it was discovered that shoulder widening can reduce related accidents by up to 49 percent.…”

“…There are many studies which have concentrated on the relative weights of decision criteria in multimodal transportation routing or road freight transportation routing: [4][5][6][7][8][9][10]17] but these studies disregarded FAHP. Although, Ko [4] adapted decision criteria in a multimodal transportation network with FAHP.…”

“…Although, Ko [4] adapted decision criteria in a multimodal transportation network with FAHP. Yuan et al [10] indicated a safety evaluation model generated by FAHP. For this reason, FAHP was employed to decide on the relative weights of decision criteria with MZOGP in the DSS.…”

“…Particularly, the risks of road accidents contained number of lanes, lane width, pavement condition, percent of frontage road, etc. Recently, Yuan et al [10] researched a safety evaluation model for provincial highways with FAHP in Hebei province, this model concentrated on accident severity, geometric feature, traffic facility and traffic environment. The authors discovered that there were a few studies which emphasized on the DSS for multimodal transportation but neglected road freight transportation.…”

Crash Risk Prediction Modeling Based on the Traffic Conflict Technique and a Microscopic Simulation for Freeway Interchange Merging Areas

“…It is urgent to develop a surrogate safety measure to assess the traffic facilities and traffic running conditions. As a non-accident traffic safety measure, the traffic conflict technique has been widely applied, especially at urban intersections [15,16,17,18,19,20,21,22,23,24,25]. However, the validity of the traffic conflict technique on the expressway, in the field, has not been fully substantiated, especially with respect to the application to the interchange segment.…”