2 of 8 Table 1 - Existing turning movement counts Approach Movement Turning counts Bayview Ave Left tum 30 Right turn IS
Posted: Sat May 21, 2022 1:07 pm
- 2 Of 8 Table 1 Existing Turning Movement Counts Approach Movement Turning Counts Bayview Ave Left Tum 30 Right Turn Is 1 (44.08 KiB) Viewed 14 times
- 2 Of 8 Table 1 Existing Turning Movement Counts Approach Movement Turning Counts Bayview Ave Left Tum 30 Right Turn Is 2 (15.69 KiB) Viewed 14 times
You can assume that if the intersection were to be reconfigured as a roundabout, the existing lane discipline
would be maintained. There are no separate lanes, left turning traffic must give way to all circulating traffic
in front of the intersection approach.
Design values for critical gap and follow up headway for all roundabout approaches are 4 seconds and 3seconds respectively.Include a large, clear diagram of the intersection operating in this configuration. You should show all ofyour calculations, neatly presented in Tables and Figures that are referenced in the text of your report
Design values for critical gap and follow up headway for all roundabout approaches are 4 seconds and 3
seconds respectively.
Include a large, clear diagram of the intersection operating in this configuration. You should show all of
your calculations, neatly presented in Tables and Figures that are referenced in the text of your report
2 of 8 Table 1 - Existing turning movement counts Approach Movement Turning counts Bayview Ave Left tum 30 Right turn IS Clayton Road N Lettum 10 Through 50 Clayton Roads Through 60 Right tum 15 The existing intersection configuration is illustrated in Figure 2 which shows each approach has one lane, in which two movements from the same approach share the lane. Figure 2 - existing intersection configuration CIV2282 Transport and Thalic Engineering Assignment The Version 2022 In order to address the excessive queuing problem, a proposal has been received to change the unsignalized intersection layout by providing separate lanes for the right and left turnings of Clayton Road Sand Bayview Avenue, respectively (see Figure 3), and to change intersection control to either a roundabout (see Figure 4) or a signalised intersection (see Figure 5). You have been asked to compare the performance of the proposed improvements. Assume the space is sufficient to host signalling devices or roundabout facilities. The queuing service rates (practical capacities) are assumed to equal to 90 per cent of the corresponding theoretical absorption capacities. To do this, you should see the marking guide for more details) Calculate the proportions of vehicles that have to stop for all six movements in all three intersection configurations • Calculate the average delays per vehicle (average time in the system') in all three intersection configurations for the six movements, for the three approach roads, and for the intersection as a whole Calculate the 95th percentile queue lengths (that which is exceeded only 5% of the time), for the six movements in the signalised and roundabout configurations Calculate the maximum queue lengths for the six movements in the signalised configuration
The proposed roundabout configuration is illustrated in Figure 4. IN Clayton North Vqy Bayview Carytas su Figure 4 -proposed roundabout configuration