Pedestrians are one of the most vulnerable groups in the face of vehicles. A significant number of pedestrians are killed or injured in accidents each year. Pedestrian accidents occur mainly in urban areas. This study eva‎luates the safety of pedestrians in traffic conflicts with vehicles. Surrogate safety measures have been used to eva‎luate the safety of conflicts. These indicators make it possible to assess the vulnerability of pedestrians. The use of these measures has advantages such as not being independent of accident statistics and some of its details and errors, and the possibility of examining risky conflicts that did not lead to an accident. In the study of the safety of conflicts in city roads, four indicators of post encroachment time, lane-based post-encroachment time, gap time, and time to collision have been used. The present study investigates the model of pedestrian conflicts with vehicles and identifies independent variables affecting the Surrogate safety measures in a Mid-block of pedestrian crossings and an intersection in the busy thoroughfares of Isfahan. This study was performed with the help of field data collection and statistical studies. Surrogate safety measures and extractable variables were extracted from the videos recorded in the streets of Isfahan and with the help of regression and ANOVA analysis, the level of conflict safety was assessed. The results obtained from the PET model show: If the crosswalk is of Mid-block type, the PET index increases by 0.64. If a pedestrian conflicts with only one vehicle, the PET index increases by 0.55. If the vehicle conflicting with a pedestrian is an SUV vehicle, the PET index increases by 0.58. If the gender of the pedestrian is female, the PET index increases by 0.44. If the conflict occurs in the daytime, the PET index increases by 0.35. The results obtained from the LPET model show: If the pedestrian conflicts with only one vehicle, the LPET index increases by 0.62. If the conflict occurs in the daytime, the LPET index increases by 0.38. If a pedestrian stops while crossing the street, the LPET index decreases by 0.93. If the vehicle conflicting with a pedestrian is an SUV vehicle, the LPET index increases by 0.71. The results obtained from the GT model show: If the direction of pedestrians from left to right is in the driverʹs view, the GT index increases by 0.45. If the pedestrian conflicts with only one vehicle, the GT index increases by 0.43. If pedestrians cross the street in groups, the GT index decreases by 0.30. The results obtained from the TTC model show: If the crosswalk is of Mid-block type, the TTC index increases by 1.08. By increasing the velocity of pedestrians equal to one unit, the TTC index decreases by 0.49. If a pedestrian conflicts with only one vehicle, the TTC index increases by 0.43. By increasing the vehicle velocity equal to one unit, the TTC index decreases by 0.09. It is important to pay attention to the mentioned variables to plan and predict appropriate facilities for pedestrians to cross the street.

حسين حق‌شناس، ميثم اكبرزاده

محمد تمنايي، امين ميرزا بروجرديان