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Sekhar, Ravi
- Comparative Evaluation of Bus Rapid Transit Routes Using Super Efficiency Data Envelopment Analysis
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PDF Views:81
Authors
Affiliations
1 Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 Transportation Planning Division, CSIR-Central Road Research Institute, New Delhi 100 025, IN
1 Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 Transportation Planning Division, CSIR-Central Road Research Institute, New Delhi 100 025, IN
Source
Current Science, Vol 113, No 07 (2017), Pagination: 1408-1419Abstract
Periodical evaluation of the transit system and its subunits is becoming paramount for improving its performance. This article evaluates the performance of 12 routes of the bus rapid transit system operating in Ahmedabad, India. The performance indices considered in the study were divided into five major types of efficiency, viz. route design, scheduled design, cost, service delivery, and comfort and safety efficiency. Super efficiency data envelopment analysis was used to estimate efficiency scores for each type. Further, composite efficiency of routes was estimated based on analytical hierarchy process technique.Keywords
Analytical Hierarchy Process, Bus Rapid Transit, Data Envelopment Analysis, Route Performance.Full Text
References
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- Estimating Capacity of Hybrid Bus Rapid Transit Corridor
Abstract Views :242 |
PDF Views:74
Authors
Affiliations
1 Civil Engineering Department, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 Transportation Planning Division, CSIR-Central Road Research Institute, New Delhi 100 025, IN
1 Civil Engineering Department, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 Transportation Planning Division, CSIR-Central Road Research Institute, New Delhi 100 025, IN
Source
Current Science, Vol 113, No 08 (2017), Pagination: 1586-1592Abstract
The main objective of this study is to estimate the capacity of hybrid bus rapid transit (BRT) corridor. By the term hybrid BRT corridor in context to this study, we mean a corridor in which buses have to operate in an exclusive environment as well as in a mixed traffic environment. Capacity is an important parameter to estimate corridor and system performance. Therefore to evaluate the same, Ahmedabad BRT system was chosen in the present study. On the basis of boarding alighting data, the busiest route comprising both segregated (exclusive environment) and unsegregated (mixed traffic environment) stretch was selected. For estimating the capacity, an empirical method was adopted. Bus lane capacity for segregated stretch and unsegregated stretch was estimated as 243 buses/h and 101 buses/h respectively. The overall capacity value of hybrid BRT corridor was minimum of the two, i.e. 101 buses/h. After estimating the capacity so obtained, the effect of mixed traffic environment on overall corridor capacity was observed.
Further, an attempt was made to estimate capacity using conventional Greenshield model on a mid-block section. Following this, the results of two approaches namely, empirical model capacity and capacity using Greenshield model were compared. The capacity obtained at mid-block section of the segregated stretch was overestimated by 19.34% or 290 buses/h compared to that obtained using empirical method (243 buses/h).
Keywords
Hybrid Bus Rapid Transit, Greenshield Model, Population, Traffic.Full Text
References
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- Travel Time Reliability as a Level of Service Measure for Urban and Inter-Urban Corridors in India
Abstract Views :277 |
PDF Views:92
Authors
Affiliations
1 Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 CSIR-Central Road Research Institute, New Delhi 100 025, IN
1 Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, IN
2 CSIR-Central Road Research Institute, New Delhi 100 025, IN
Source
Current Science, Vol 114, No 09 (2018), Pagination: 1913-1922Abstract
The present study demonstrates the application and usefulness of travel time reliability as a level of service (LOS) measure for urban arterial and inter-urban highway corridors on Indian roads. For travel time estimation, automatic vehicle license plate number data were collected through TrafficMon system. This system is a fully video-based enforcement system designed to measure the speed of vehicles passing in view of the camera, and read the vehicular license plate number. This system was implemented at the entry and exit side of the identified three study corridors and data were collected during morning and evening peak periods. The data were analysed and various travel time reliability measures were evaluated. The study also attempts to correlate reliability measures such as planning time (PT), buffer time (BT), planning time index (PTI) and buffer time index (BTI) with volume-to-capacity ratio which is the most widely used LOS measure for Indian roads. Analysis of results indicated that at LOS B the travel time of intercity highway was 40–46 sec/km, whereas it was 64–80 sec/km and 75–135 sec/km for urban uninterrupted and interrupted corridors respectively. The planning time for LOS B was more on urban arterial corridors when compared to inter-urban corridor for the same width of the carriageway. The upper limits of LOS B for PT were 132 sec/km and 63 sec/km for uninterrupted urban corridor and intercity highway corridor respectively. Other parameters of reliability like PTI and BTI were also evaluated and their values for different ranges of volume-capacity ratio were presented for identified corridors.Keywords
Automatic License Plate Method, Buffer Time Index, Capacity, Travel Time Index, Travel Time Reliability, Urban Arterial.Full Text
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