Location

London

Event Website

http://www.csce2016.ca/

Description

The main thrust of the study is to investigate the extent of delay induced by rainfall at the roundabouts. Traffic flows at roundabout are continuous in one direction around a central island where entry flows yield to circulating flows. Based on the hypothesis that, rainfall will increase roundabout entry delay, ‘with and without’ rainfall studies were carried out at selected roundabouts in Durban, South Africa. Entry and circulating traffic flow data as well as geometric data were collected continuously at three selected sites during rainfall and dry weather conditions. Three classes of rainfall intensity were used: light rainfall with intensity < 2.5mm/h, moderate rainfall with intensity 2.5 – 10mm/h and heavy rainfall with intensity 10 – 50mm/h. Results show that entry delays increased between 11% and 22% during rainy conditions. The study concluded that heavy rainfall has a significant impact on delays and queues at roundabouts. The delay is not responsive to light and moderate rainfall intensity.


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Jun 1st, 12:00 AM Jun 4th, 12:00 AM

TRA-933: EFFECTS OF RAINFALL ON CONTROL DELAY AND QUEUE AT MULTILANE ROUNDABOUT

London

The main thrust of the study is to investigate the extent of delay induced by rainfall at the roundabouts. Traffic flows at roundabout are continuous in one direction around a central island where entry flows yield to circulating flows. Based on the hypothesis that, rainfall will increase roundabout entry delay, ‘with and without’ rainfall studies were carried out at selected roundabouts in Durban, South Africa. Entry and circulating traffic flow data as well as geometric data were collected continuously at three selected sites during rainfall and dry weather conditions. Three classes of rainfall intensity were used: light rainfall with intensity < 2.5mm/h, moderate rainfall with intensity 2.5 – 10mm/h and heavy rainfall with intensity 10 – 50mm/h. Results show that entry delays increased between 11% and 22% during rainy conditions. The study concluded that heavy rainfall has a significant impact on delays and queues at roundabouts. The delay is not responsive to light and moderate rainfall intensity.

http://ir.lib.uwo.ca/csce2016/London/Transportation/15