Traffic Accident Research Centre Journal of Indonesia Road Safety - Vol. 2, No. 3, December 2019, p. 133-148 133 ANALYSIS OF SPEED AND SOCIAL-PSYCHOLOGY FACTORS OF SPEEDING BEHAVIOUR ON DRIVERS IN DKI JAKARTA Analisis Kecepatan Mengemudi dan Faktor Sosial Psikologis Perilaku Mengebut pada Pengemudi di DKI Jakarta Andyka Kusuma Department of Civil Engineering University of Indonesia Kampus Baru UI Depok Depok, West Java andyka.k@eng.ui.ac.id Dewi Maulina Faculty of Psychology University of Indonesia Kampus Baru UI Depok Depok, West Java dewi.maulina140105@gmail.com Almatrisa Mustikha Hutami Department of Civil Engineering University of Indonesia Kampus Baru UI Depok Depok, West Java almatrisamustikha@gmail.com Abstract Increased vehicle speed will affect the increase in reaction time and distance to stop and the increased possibility of errors that can be done by the driver. The most common cause of accidents faced by many countries is a high speed and exceeding permitted limits because they contribute to the problem of the number and number of fatalities of accident victims. Setting the maximum speed limit can reduce the risk of accidents. The higher the speed, the greater the stop distance needed, and the risk of accidents increases. Keywords: speed, safety, maximum speed limit Abstrak Kecepatan kendaraan yang meningkat akan berpengaruh terhadap peningkatan waktu reaksi dan jarak untuk berhenti serta meningkatnya kemungkinan kesalahan yang dapat dilakukan oleh pengemudi. Faktor penyebab kecelakaan yang paling sering dihadapi oleh banyak negara adalah kecepatan tinggi dan melebihi batas yang diijinkan karena ikut berkontribusi pada permasalahan jumlah dan kefatalan korban kecelakaan. Mengatur batas kecepatan maksimum dapat menurunkan resiko kecelakaan. Semakin tinggi kecepatan, maka semakin besar jarak berhenti yang dibutuhkan dan resiko kecelakaan semakin meningkat. Kata kunci: kecepatan, keselamatan, batas kecepatan maksimum INTRODUCTION Speed has been identified as one of the main risk factors for accidents in Indonesia. In the aspect of traffic and vehicle aspects of regulation, control, and traffic control need to be considered, one example of which is by recommending the design speed or plan speed on a road segment. Traffic stakeholders encourage speed limits on the road, starting from the design process to the operational speed of the road. In high-income countries, speed contributes to around 30% of road deaths, while in some low- and middle-income countries, speed is expected to be a major contributing factor to accidents. The phenomenon of speed limit violations is a driver's behaviour that exceeds the speed limit that has been determined through applicable regulations adjusted to the road characteristics and traffic conditions on the road. Driving behaviour above regulated speed limits certainly has potential causes of accidents resulting in mortality and morbidity. Therefore, controlling the speed of the vehicle is one way to reduce the potential for accidents and the risk of severity of the victim.