Feby Aristia Putri, Lucky Agung Raf’i

ANALISIS KINERJA SIMPANG TAK BERSINYAL PADA RUAS JALAN AHMAD YANI KOTA METRO

Introduction

Analisis kinerja simpang tak bersinyal pada ruas jalan ahmad yani kota metro. Analisis kinerja simpang tak bersinyal Jalan Ahmad Yani, Kota Metro. Mengidentifikasi kemacetan lalu lintas, derajat kejenuhan, dan tundaan serta menyajikan solusi efektif.

Abstract

Persimpangan jalan merupakan salah satu tempat terjadinya konflik lalu lintas. Bertambahnya jumlah kendaraan tanpa diiringi oleh peningkatan lebar jalan bisa menyebabkan terjadinya kepadatan lalu lintas dan akumulasi kendaraan di persimpangan jalan, terutama pada waktu jam sibuk. Simpang tak bersinyal sepanjang ruas Jalan Ahmad Yani merupakan lokasi kompleks perkantoran dan rumah sakit serta pull bus dan swalayan, sehingga pada jam tertentu arus lalu lintasnya sangat padat. Kinerja suatu simpang sangat penting untuk mengoptimalkan fungsi simpang dan parameter yang digunakan untuk menilai kinerja simpang tak bersinyal. Tujuan dari studi ini adalah untuk mengidentifikasi kinerja simpang tak bersinyal pada ruas Jalan Ahmad Yani serta menyajikan solusi yang efektif untuk mengatasi masalah yang ada di simpang tersebut. Metode yang digunakan dalam penelitian adalah metode kuantitatif. Nilai derajat kejenuhan tertinggi pada pagi hari waktu interval 06.00-07.00 jumlah 1,25, dan di siang hari waktu interval 12.00-13.00 jumlah 0,81, dan di sore hari waktu interval 16.00-17.00 jumlah 1,11. Lalu nilai tundaan tertinggi pada pagi hari waktu interval 07.00-08.00 jumlah 25,81, dan di siang hari waktu interval 12.00-13.00 jumlah 25,00, dan di sore hari waktu interval 17.00-18.00 jumlah 27,26. Setelah diterapkannya alternatif menghilangkan hambatan samping dari tinggi ke rendah, dan pelebaran sisi pendekatan simpang. Nilai derajat kejenuhan tertinggi pada pagi hari waktu interval 06.00-07.00 jumlah 1,09, dan di siang hari waktu interval 12.00-13.00 jumlah 0,70, dan di sore hari waktu interval 16.00-17.00 jumlah 0,97. Lalu nilai tundaan tertinggi pada pagi hari waktu interval 06.00-07.00 jumlah 24,87, dan di siang hari waktu interval 12.00 sampai 13.00 jumlah 28,74, dan di sore hari waktu interval 17.00-18.00 jumlah 21,67.

Review

This study addresses a highly pertinent issue in urban traffic management: the performance of unsignalized intersections, particularly in areas experiencing high traffic volumes. The chosen location, Jalan Ahmad Yani in Metro City, is well-justified given its role as a hub for offices, hospitals, and commercial establishments, naturally leading to significant traffic congestion during peak hours. The stated objective to identify current performance and propose effective solutions is commendable, highlighting the practical applicability of the research. Employing a quantitative methodology, the paper aims to provide data-driven insights into the operational characteristics of these critical traffic nodes. The abstract presents a clear picture of the existing challenges, reporting high degrees of saturation (DS) peaking at 1.25 in the morning and significant delays (e.g., 27.26 seconds in the evening) before interventions. These values undeniably point to severe congestion and poor operational efficiency. The proposed interventions involve "removing side friction" and "widening intersection approaches." While these are common strategies, the abstract lacks specific details regarding the *nature* of the side friction removed or the *extent* of the widening. Critically, while the degree of saturation generally shows improvement post-intervention, some post-intervention delay values (e.g., 28.74 seconds at midday) are reported as *higher* than their pre-intervention counterparts (25.00 seconds). This inconsistency is a significant concern that requires thorough explanation, as it undermines the effectiveness of the proposed solutions. The absence of specific methodology beyond "quantitative" also makes it difficult to ascertain the reliability and replicability of the reported results. Overall, the study tackles a relevant problem with practical implications for urban planning and traffic engineering in Metro City. Its strength lies in its direct engagement with a real-world traffic issue and its attempt to quantify the current state and potential improvements. However, to enhance the academic rigor and practical utility, the full paper should elaborate significantly on the specific quantitative models and tools employed (e.g., referencing national or international guidelines like MKJI or HCM). Furthermore, detailed descriptions of the simulated interventions, including specific dimensions and types of friction reduction, are essential. Most importantly, the paper must address and clarify the contradictory delay results post-intervention to ensure the credibility of its proposed solutions. Incorporating a discussion on the resulting Level of Service (LoS) for each scenario would also provide a more comprehensive interpretation of the numerical findings.

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