Putranto, Leksmono Suryo and Sari, Anita and Santoso, Bernardus Ivan (2012) SAMPLING STRATEGY FOR SPACE MEAN SPEED SURVEY. Jurnal Forum Studi Transportasi antar Perguruan Tinggi. ISSN 1411-2422

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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.

Item Type: Article
Subjects: Jurnal
Penelitian > Fakultas Teknik
Divisions: Fakultas Teknik > Teknik Sipil
Depositing User: Leksmono suryo putranto
Date Deposited: 16 May 2018 17:00
Last Modified: 16 Apr 2021 03:58

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