مقایسه ایمنی عابر پیاده در تداخل با اتومبیل‌ها و موتورسیکلت‌ها بر اساس شاخص‌های تداخلی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش آموخته کارشناسی ارشد، گروه راه و ترابری دانشگاه تربیت مدرس، تهران، ایران.

2 عضو هیئت علمی دانشکده مهندسی عمران و محیط زیست دانشگاه تربیت مدرس

چکیده

عابران پیاده در بخش­هایی مانند تقاطع های بدون چراغ بعضاً در ریسک بالایی قرار می­گیرند. عابران در این تقاطع­ها با وسایل نقلیه مختلفی از جمله اتومبیل ها و موتورسیکلت ها تداخل دارند. در این تحقیق با استفاده از شاخص­های تداخلی زمان تا تصادف و زمان پس از تخطی، ایمنی عابران پیاده در تداخل با این دو نوع وسیله مقایسه می­شود. تقاطع بدون چراغ وصال-بزرگمهر در تهران برای مطالعه مورد بررسی قرار گرفته است. برای بررسی­های آماری، از تحلیل آنووای یک طرفه استفاده شد. تعداد مشاهدات برای هر کدام از متغیرهای وابسته زمان تا تصادف و زمان پس از تخطی به ترتیب 758 و 791 مشاهده هستند. میانگین لگاریتم شاخص زمان تا تصادف در موتورسیکلت ها 03/0 کمتر از اتومبیل ها بود. همچنین میانگین لگاریتم شاخص زمان پس از تخطی در وسایل نقلیه نیز 09/0 کمتر از موتورسیکلت­هاست. از شاخص زمان تا تصادف، برای شناسایی وضعیت­های دارای پتانسیل خطر و از شاخص زمان پس از تخطی برای شناسایی وضعیت­های بحرانی برای عابران پیاده استفاده شده است. چون شاخص زمان تا تصادف، در تداخل موتورسیکلت با عابر، کمتر است، بنابراین موتورسیکلت­ها، پتانسیل خطر بالاتری را برای عابران به وجود می­آورند. اما چون شاخص زمان پس از تخطی در تداخل عابر و اتومبیل بدتر است، اتومبیل­ها، احتمال ایجاد شرایط بحرانی را برای عابران پیاده افزایش می­دهند.  

کلیدواژه‌ها

عنوان مقاله [English]

The Assessment of the Pedestrian Safety in Conflict With Cars and Motorcycles at Non-signalized Intersections Using TTC and PET

نویسندگان [English]

  • M. Shafaati 1
  • A. M. Boroujerdian 2
1 Graduated, Department of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
2 Assistant Professor, Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
چکیده [English]

Pedestrians are subjected to high levels of risk at non-signalized intersections. Pedestrians at these intersections have conflicts with different types of vehicles such as motorcycles and cars. In this paper, pedestrian safety is compared between those two groups of vehicles using Time to Collision (TTC) as well as the Post Encroachment Time (PET). Data were collected from an intersection called Vesal-Bozorgmehr in Tehran. The one-way ANOVA was used to compare those two groups. The number of observations for each TTC and PET being the dependent variable was 758 and 791 respectively. Analyses indicated that LogTTC in conflicts between vehicles and pedestrians is 0.03 units more than conflicts between motorcycles and pedestrians and LogPET in conflicts between vehicles and pedestrians is 0.09 units lower than conflicts between motorcycles and pedestrians. TTC is used for identification of situations being potentially dangerous for pedestrians and PET is used for identification of critical situations for pedestrians. As TTC for the conflicts between pedestrians and vehicles is lower than that of for pedestrians and vehicles, motorcycles potentially cause more dangerous situations for pedestrians whereas when it comes to PET, vehicles have lower PET than motorcycles, so vehicles are more able to make critical situations for pedestrians.

کلیدواژه‌ها [English]

  • edestrian Safety
  • Non-signalized Intersections
  • Post Encroachment Time
  • Time to Collision

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