Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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A Representative Driving Cycle for the Southern Expressway Compared to Existing Driving Cycles
Abstract This paper critically evaluates traffic related performance of the Southern Expressway (SEW) in Sri Lanka using basic traffic engineering parameters such as average speeds, acceleration-deceleration changes, root mean square acceleration, and positive kinetic energy. An on-road speed/time data sample was collected, and a driving cycle was developed to compare to well-established driving cycles worldwide. Ten traffic-related parameters were identified in order to evaluate the SEW using the collected data. Data was collected in proportion to the number of actual trips made by users on an average day using the on-board method; the segment-based method was adopted for cycle construction. Previously identified traffic-related parameters were used to evaluate and select representative cycle for the SEW from candidate cycles. The selected driving cycle was 1213 s in length. Average speed, average acceleration, and average deceleration were 80.6 km/h, 0.45, and 0.25 m/s2, respectively. Results showed that both average and running speeds of the SEW were significantly below compared to its posted speed limit, thereby increasing the travel time. Comparatively smooth driving behavior will improve the SEW’s fuel and emission performances. This study created a platform with which future studies can evaluate performances of all operational and future expressways.
A Representative Driving Cycle for the Southern Expressway Compared to Existing Driving Cycles
Abstract This paper critically evaluates traffic related performance of the Southern Expressway (SEW) in Sri Lanka using basic traffic engineering parameters such as average speeds, acceleration-deceleration changes, root mean square acceleration, and positive kinetic energy. An on-road speed/time data sample was collected, and a driving cycle was developed to compare to well-established driving cycles worldwide. Ten traffic-related parameters were identified in order to evaluate the SEW using the collected data. Data was collected in proportion to the number of actual trips made by users on an average day using the on-board method; the segment-based method was adopted for cycle construction. Previously identified traffic-related parameters were used to evaluate and select representative cycle for the SEW from candidate cycles. The selected driving cycle was 1213 s in length. Average speed, average acceleration, and average deceleration were 80.6 km/h, 0.45, and 0.25 m/s2, respectively. Results showed that both average and running speeds of the SEW were significantly below compared to its posted speed limit, thereby increasing the travel time. Comparatively smooth driving behavior will improve the SEW’s fuel and emission performances. This study created a platform with which future studies can evaluate performances of all operational and future expressways.
A Representative Driving Cycle for the Southern Expressway Compared to Existing Driving Cycles
Galgamuwa, Uditha (Autor:in) / Perera, Loshaka (Autor:in) / Bandara, Saman (Autor:in)
Transportation in Developing Economies ; 2 ; 1-8
16.09.2016
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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