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Jurnal Transportasi
Published by Universitas Katolik Parahyangan
ISSN : 14112442     EISSN : 26151146     DOI : -
Core Subject : Engineering,
Transportation
Jurnal Transportasi adalah jurnal ilmiah di bidang ilmu transportasi yang diterbitkan tiga kali setahun oleh Forum Studi Transportasi antar-Perguruan Tinggi (FSTPT). Makalah-makalah yang dimuat di jurnal ini merupakan makalah-makalah terbaik dari Simposium FSTPT yang diadakan setiap tahun. Selain sebagai wadah komunikasi ilmiah, penerbitan Jurnal Transportasi juga bertujuan untuk menyebarluaskan hasil-hasil penelitian yang berkaitan dengan bidang ilmu transportasi. Jurnal Transportasi terakreditasi yang kedua kali berdasarkan Keputusan Direktur Jenderal Pendidikan Tinggi, Kementerian Pendidikan Nasional Republik Indonesia, Nomor 51/DIKTI/ Kep/2010 tanggal 5 Juli 2010.
Arjuna Subject : Umum - Umum
Articles 11 Documents
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Search results for , issue "Vol. 12 No. 3 (2012)" : 11 Documents clear
SAMPLING STRATEGY FOR SPACE MEAN SPEED SURVEY Leksmono Suryo Putranto; Anita Sari; Bernadus Ivan Santoso
Jurnal Transportasi Vol. 12 No. 3 (2012)
Publisher : Forum Studi Transportasi antar Perguruan Tinggi (FSTPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.105 KB) | DOI: 10.26593/jtrans.v12i3.501.%p

Abstract

In most traffic projects, speed survey is required. If the speed survey uses detector, all data might be obtained. Otherwise a sampling strategy needs to be introduced. To ensure the collection of representative sample of speeds there were several sampling options, e.g. collecting sample every regular interval. In this paper three regular intervals were tested, i.e. 30 seconds, 1 minute and 2 minutes 30 seconds. Travel time data was collected in morning, mid day, and afternoon periods in a two-lanes two-ways underpass in Jakarta. Travel speeds were calculated by dividing light vehicle travel times with the underpass length. Space mean speeds were calculated as a light vehicle travel mean speeds/ 5 minutes. The observation of each light vehicle travel times (to get each light vehicle travel speeds) was conducted for the first 15 minutes of three observation periods. More frequent speed sample collection provides higher accuracy.Keywords: space mean speed, sampling strategy, regular interval sampling

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