Comparing the geometric regulations in spacing between ramps and studying the effect of speed on ramp spacing lengths
Publish place: 8th National Congress On Civil Engineering
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NCCE08_0526
تاریخ نمایه سازی: 5 مهر 1393
Abstract:
Existing geometric design guidance related to interchange ramp is not speed-dependent even though intuition indicates spacing and speed are related. Understanding the relationship between interchange ramp spacing, speed, and freeway operations is important. The objectives of this paper were to investigaterelationships between weaving length and speed. Within the research tasks several methods were utilized to assist in developing guidance on ramp spacing lengths. The methods or resources used to generate potential lengths included: findings from field studies at seven study sites, findings from simulationconducted as part of this research. Suggested ramp spacings were developed for the entrance ramp to exit ramp
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Authors
Hasan Zoghi
Assistant Professor in Transportation Engineering at Islamic Azad University- Karaj Branch, Karaj, Iran
Arman Yarali
M.Sc. Student of Civil Engineering- Transportation, Department of Civil Engineering, Islamic Azad University-South Tehran Branch, Tehran, Iran
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