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Journals / Teknik Dergi / 2016 / Cilt: 27 - Sayı: 2

Shockwaves in Highway Traffic: Macroscopic and Microscopic Analysis with Wavelet Transform

Karayolu Trafiğinde Şok Dalgaları: Dalgacık Dönüşümü ile Makroskobik ve Mikroskobik İnceleme

İsmail ŞAHİN
S. Şeyma KUŞAKCI
Gökçe AYDIN
Pages
7429–7452
Publication Date
2016-04-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Shockwave speeds could be used to calibrate the fundamental diagram of a traffic stream and also to estimate flow speeds (journey times) over a highway stretch.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Shock waves in highway traffic define the boundary conditions between different traffic states.
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Key Findings & Data:Understanding of formation and propagation of shock waves is helpful for analyzing the features of traffic congestion and its consequences; moreover, for developing novel highway traffic operation techniques and management strategies.
💡
Conclusion & Impact:Shockwave speeds could be used to calibrate the fundamental diagram of a traffic stream and also to estimate flow speeds (journey times) over a highway stretch.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Karayolu trafik akımı · taşıt yörüngeleri · durgun olmayan zaman serileri

Abstract

Shock waves in highway traffic define the boundary conditions between different traffic states. Understanding of formation and propagation of shock waves is helpful for analyzing the features of traffic congestion and its consequences; moreover, for developing novel highway traffic operation techniques and management strategies. Formation and propagation of shock waves were analyzed with wavelet transform technique using two different sets of data, namely macroscopic (mean flow speeds) and microscopic (vehicle trajectories). Estimated propagation speeds of shockwaves in this study are consistent with those reported in the literature. Shockwave speeds could be used to calibrate the fundamental diagram of a traffic stream and also to estimate flow speeds (journey times) over a highway stretch.

Özet

Şok dalgaları, karayolunda farklı trafik durumları arasındaki sınır şartlarını tanımlar. Şok dalgalarının oluşumunu ve yayılmasını anlamak, trafik tıkanıklığının özelliklerini ve etkilerini incelemenin yanında, yeni trafik işletim tekniklerinin ve yönetim stratejilerinin geliştirilmesi için de önemlidir. Şok dalgalarının oluşması ve yayılması, makroskobik (ortalama akım hızı) ve mikroskobik (taşıt yörüngeleri) olmak üzere iki farklı veri kümesi kullanılarak, dalgacık dönüşümü (wavelet transform) tekniğiyle incelenmiştir. Şok dalgalarının bu çalışmada tahmin edilen yayılma hızları literatürde bulunan hızlarla uyumludur. Dalga hızları, trafik akışının temel diyagramını kalibre etmek ve bir karayolu kesimindeki akım hızlarını (yolculuk sürelerini) tahmin etmek için kullanılabilmektedir.

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Cite This Article

ŞAHİN, İ., KUŞAKCI, S. Ş., AYDIN, G. (2016). Shockwaves in Highway Traffic: Macroscopic and Microscopic Analysis with Wavelet Transform. Teknik Dergi, Cilt: 27 - Sayı: 2, 7429–7452. https://ajindex.com/articles/51320

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