Dracula Coursework

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TRAN5291M

Traffic Network Modelling

Assignment: [Dracula Coursework]

Student ID Number: [200750558]

Lecturer: [Dr. Ronghui Liu]

Submission Date: [12/03/2013]

Semester: [Semester 2]

Academic Year: [2012-2013]

Words: [1546]

Table of Content

1.Introduction.............................................................................................................3

2.Task coding for base scenario..............................................................................3

3 Task C (Simulation for proposed bus lane scheme)..........................................4

4.Task D (comparison of bus stop and bus lay by)................................................5

5.Task E (Proposed Scheme)...................................................................................7

6.Conclusion..............................................................................................................9

7.Reference..............................................................................................................10

1.Introduction
Otley is a market town in the outskirts of Leeds having population of 14124(National statistics.2004). Otley town council wants to patronage public transport service by improving bus services to market and improving local environment by traffic reduction.

We as a transport planner have been tasked to measure the effectiveness of inclusion of bus lane on link 24-17 which is a two lane carriage way serving all traffic, also to consider a change of bus layby to a bus stop

Figure 1 Otley Network
The bus service in on route from zone 105 to 109 with a frequency of one every 10 minutes. Data collected from Dracula after simulation for bus route which have 2 bus stop and one layby holds the base scenario for this report and also to which the proposed scheme is compared.

2.Task coding for base scenario
2.Simulation of the Base Scenario
For base scenario, the network is coded with 2 bus stop on link 24-17 and 15-9 and a bus lay by on link 16-15, 5 iteration were done with random NSEED no which are shown in table 1

 | Day 1| Day 2| Day 3| Day 4| Day 5|
NSEED| 12345| 23456| 34567| 45678| 56789|
Table 1.Random NSEED NO.
Data collected for this simulation in this report included average total journey time for cars and buses over the network for 5 days which was 90.26 seconds with standard deviation of 2.26 for cars and 354.68 seconds with standard deviation of 7.55 for buses. The total Journey time data was taken from <net>.REB file

Figure 1.Base scenario average journey time for 5 days
3 Task C
3.1Simulation for proposed bus lane scheme
Simulation for proposed bus lane on link 24-17 were carried with same NSEED no as in the base scenario with respective days.

Figure 2.Average journey time with bus lane
As the graph indicates average total journey time for cars is 89.62 and for bus is 339.48 sec ,which has decreased in comparison with the base scenario.

When the average journey times for the base scenario is compared with the proposed bus lane scheme as shown in figure 3,it was observed that although the journey time with the inclusion of bus lane have decreased but the deviation from the mean is higher compared to base scenario. As from the figure 3 the maximum deviation for the bus lane scheme not much higher as in the case of base scenario but with a minimum deviation there is a probability that journey time with bus lane scheme can reduce further.

Figure 3.comparison of avg. journey times for base scenario and bus lane journey time
In case of cars the change in average total journey time does not have a significant impact as the journey time in...
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