Yazar "Tanyel, Serhan" seçeneğine göre listele

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    Investigation of the effect of geometric irregularities on capacity of traffic circles by using partial least squares regression method
    (Canadian Science Publishing, 2024) Avsar, Yagmur Ozinal; Yildirim, Zeynel Baran; Politi, Ruti R.; Tanyel, Serhan
    This paper examined the impact of geometric irregularities on the intersection capacity at traffic circles. A new empirical capacity relation was proposed to predict the capacity of the traffic circles as a function of geometric elements, exit and circulating flows. Within this scope, first, the relationship between the vehicles entering from the minor approach and the circulating flow from the turning movement in the traffic circle was examined based on the K-Means cluster analysis method. The analysis was created in accordance with an exponential relationship between entry and circulating flow. Second, two clusters were selected by the partial least squares regression method to improve the model's effectiveness. Lastly, to validate the model, leave-one-out cross-validation was used to select the components that maximize the model's predictive ability. The results show that geometric parameters of a traffic circle create different effects on capacity, especially in different circulating flow conditions.
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    Travel demand management: a review of recent literature
    (Emerald Group Publishing Ltd, 2025) Yildirim, Zeynel Baran; Ozuysal, Mustafa; Tanyel, Serhan
    Travel demand management (TDM) techniques constitute a critical component of sustainable transportation by mitigating travel demand, optimising existing infrastructure, and promoting multimodal mobility. This literature review synthesises recent findings on the efficacy of TDM interventions, highlighting their capacity to address congestion, minimise environmental impacts, and foster economic vitality. The review emphasises the growing importance of integrating emerging technologies and innovative solutions into TDM practices to address evolving urban mobility challenges and improve policy effectiveness. The results underscore the importance of aligning TDM measures with broader sustainability objectives, including equitable access, public health, and holistic urban planning. Practical policy recommendations emphasise collaborative governance, ensuring that TDM strategies not only enhance operational efficiency but also uphold social and environmental goals. By situating TDM within a comprehensive transport policy context, this review advocates resilient, future-focused solutions contributing to vibrant, low-carbon urban environments.