Influence of Bus Rapid Transit (BRT) on Anomalous Road Capacity Utilization
Publication: International Conference on Transportation and Development 2022
ABSTRACT
Bus rapid transit (BRT) has emerged as a cost-effective mode of public transportation in many cities worldwide. It has been argued that BRT carries more people per lane than the mixed vehicular traffic. However, road carriageways are designed for mixed vehicular traffic volume not people per lane. Paper measured the impact of BRT on roadway capacity utilization. The paper postulates that the design of BRT corridors affects adjoining vehicular traffic flows irrespective of whether BRT stations are located at midblock or curbside stations. The objectives were to measure traffic flow lane utilization in the presence of BRT facilities and compare outcomes with those taken without the influence of BRT. To that effect, traffic data at peak and off-peak conditions were surveyed at four selected sites on regional route R27 in Cape Town, South Africa, for a period of three months, under daylight and dry weather conditions. Based on the circumstances prevalent at the time of the survey, the pilot study assumed that density was a resultant of speed and flow hence not directly affected by BRT facilities. This implies that traffic flow utilization was fully the result of speed changes. The results of the study show significant anomalous capacity differentials from base year 2009 to 2021 post lockdown, with attendant consequences for capacity utilization. The study concluded that roadway capacity utilization is significantly enhanced by BRT mixed traffic operations.
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International Conference on Transportation and Development 2022
Pages: 88 - 97
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Published online: Aug 31, 2022
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