Electronic Theses and Dissertation

Jalan Teuku Nyak Arief merupakan jalan arteri perkotaan di Kota Banda Aceh yang sering mengalami genangan saat hujan dengan intensitas lebih dari 10 mm/jam (hujan intensitas tinggi), sehingga berpotensi memengaruhi kinerja lalu lintas. Penelitian ini bertujuan untuk mengevaluasi kapasitas dan kinerja ruas jalan pada kondisi hujan intensitas tinggi menggunakan Pedoman Kapasitas Jalan Indonesia (PKJI) 2023 serta menganalisis proyeksi kinerjanya berdasarkan pertumbuhan lalu lintas dan hujan rencana. Data volume lalu lintas diperoleh melalui survei manual pada hari Selasa, 7 April 2026, sedangkan kecepatan kendaraan dianalisis menggunakan pendekatan Space Mean Speed (SMS). Data curah hujan harian maksimum tahunan dari Pos ARR (Automatic Rainfall Recorder) Cot Irie dianalisis menggunakan beberapa distribusi frekuensi, sedangkan intensitas hujan dihitung dengan metode Mononobe. Hasil penelitian menunjukkan bahwa pada saat hujan intensitas tinggi sebesar 15,7 mm/jam pukul 16.00-17.00 WIB, volume lalu lintas menurun dari 1.165,5 smp/jam pada kondisi normal menjadi 687,6 smp/jam atau turun 41,0%, sedangkan kecepatan rata-rata kendaraan menurun dari 49,14 km/jam menjadi 27,71 km/jam. Kapasitas ruas jalan berdasarkan PKJI 2023 sebesar 3.121,2 smp/jam. Derajat kejenuhan pada saat hujan sebesar 0,220 (LOS B), lebih rendah dibandingkan kondisi normal sebesar 0,374 (LOS B). Setelah hujan reda pada pukul 17.00-18.00 WIB, derajat kejenuhan meningkat menjadi 0,462 (LOS C), lebih tinggi dibandingkan kondisi normal sebesar 0,359 (LOS B). Hasil analisis hidrologi menunjukkan bahwa Distribusi Log Pearson Tipe III merupakan distribusi yang paling sesuai, dengan intensitas hujan rencana periode ulang 25 tahun sebesar 74,5 mm/jam. Berdasarkan proyeksi pertumbuhan lalu lintas sebesar 4,83% per tahun, derajat kejenuhan diperkirakan meningkat menjadi 0,716 (LOS C) pada tahun 2051, sehingga kinerja ruas jalan berpotensi menurun di masa mendatang.

Teuku Nyak Arief Road is an urban arterial road in Banda Aceh City that frequently experiences waterlogging during rainfall exceeding 10 mm/hour (high-intensity rainfall), which has the potential to affect traffic performance. This study aims to evaluate the capacity and performance of the road segment under high-intensity rainfall conditions using the Indonesian Highway Capacity Guidelines (Pedoman Kapasitas Jalan Indonesia/PKJI) 2023, as well as to analyze projected performance based on traffic growth and design rainfall. Traffic volume data were obtained through manual surveys conducted on Tuesday, April 7, 2026, while vehicle speed was analyzed using the Space Mean Speed (SMS) approach. Annual maximum daily rainfall data from the Cot Irie Automatic Rainfall Recorder (ARR) station were analyzed using several probability distributions, while rainfall intensity was calculated using the Mononobe method. The results show that during high-intensity rainfall of 15.7 mm/hour at 16:00-17:00 WIB, traffic volume decreased from 1,165.5 pcu/hour under normal conditions to 687.6 pcu/hour, a reduction of 41.0%, while the average vehicle speed decreased from 49.14 km/hour to 27.71 km/hour. The road capacity based on PKJI 2023 was 3,121.2 pcu/hour. The degree of saturation during rainfall was 0.220 (LOS B), lower than the normal condition of 0.374 (LOS B). After the rain subsided at 17:00-18:00 WIB, the degree of saturation increased to 0.462 (LOS C), higher than the normal condition of 0.359 (LOS B) at the same time period. The hydrological analysis showed that the Log Pearson Type III Distribution was the most suitable, with a 25-year return period design rainfall intensity of 74.5 mm/hour. Based on a projected traffic growth rate of 4.83% per year, the degree of saturation is estimated to increase to 0.716 (LOS C) by 2051, indicating that the road's performance may decline in the future.