Differences

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--- woolcrossingtrafficsimulation [2016/07/12 14:37] – mark
+++ woolcrossingtrafficsimulation [2016/07/13 14:27] (current) – [Conclusion] mark
@@ Line 4: / Line 4: @@
 This page describes a basic Traffic Simulation of the Wool Level Crossing.
-Please note that the figures used in this simulation still need to be checked to make sure they are accurate. If anyone finds any mistakes, please let me know ASAP.
@@ Line 17: / Line 17: @@
 NOTE: The Video of the simulation has been started at ~ 8:13 to see the first crossing down. The Simulation is also running faster than real time (benny hill mode).
-{{https://github.com/mretallack/WoolSimulation/raw/master/SimWithJustCars11072016.ogv|}}
+{{youtube>bAs98V4Kprs|SimWithJustCars11072016}}
+\\
+The PTI Automatic Traffic Count data from the PTI report is from 2014-03-01 to 2014-03-25.
 The Crossing down times has been gained from the  Open Rail Data (Note3), this provides detailed information of train locations heading towards and away from the Wool Crossing. Using this information it is possible to generate an estimated crossing down times and lengths. This information was programmed into the simulation for the time between 8am and 9am:
@@ Line 59: / Line 62: @@
 The video below shows the new Simulation with traffic split. Again the simulation is running fast.
-{{https://github.com/mretallack/WoolSimulation/raw/master/SimWithAllVehiclesTypes11072016.ogv|}}
+{{youtube>7v8bvCRs7NY|SimWithAllVehiclesTypes11072016}}
+\\
 Limitations:
@@ Line 85: / Line 89: @@
 The following video shows the output from the new model using the manual traffic survey counts.
-{{https://github.com/mretallack/WoolSimulation/raw/master/SimWithEstimatedVehicle11072016.ogv|}}
+{{youtube>W2yRIVCfscM|SimWithEstimatedVehicle11072016}}
+\\
+The simulation above was created using flow data from:
+^ Location	     ^ Date	  ^
+| From Lulworth	     | 2009/09/14 |
+| From Wareham       | 2007/04/24 |
+| From Dorchester    | 2008/07/11 |
 This simulation has the following Limitations:
@@ Line 119: / Line 132: @@
 So 92.64% of vehicles leaving the new location will head east. The new flow data with the extra 320 vehicles per hour from 8am to 9am.
-The first simulation shows the queuing traffic from Lulworth before the crossing goes down.
+The first simulation shows the queuing traffic from Lulworth before the crossing goes down. This is a major difference from the previous simulations without the extra 1000 homes where there was only a small queue (~4 vehicles) while the crossing was up.
-{{https://github.com/mretallack/WoolSimulation/raw/master/SimWithEstimatedVehicle1000HomeStart12072016.ogv|}}
+\\
+{{youtube>HBlJCoxoNqs|SimWithEstimatedVehicle1000HomeStart12072016}}
+\\
 This second simulation shows the first time the crossing goes down. The simulator shows that the resultant queue goes all the way back to Dorset Green.
-{{https://github.com/mretallack/WoolSimulation/raw/master/SimWithEstimatedVehicle1000HomeCrossingDown12072016.ogv|}}
+{{youtube>4uYs0DnBqxc|SimWithEstimatedVehicle1000HomeCrossingDown12072016}}
 \\
@@ Line 132: / Line 148: @@
 The SUMO traffic model can also output the emission for a given road edge. The following graph has been generated using the default emission profile for a point close to the crossing. It only shows the emissions for vehicles travelling over that point. The Graph shows the NOx g/km/h.
-{{::emission1.jpg?200|}}
+{{::emission1.jpg?800|}}
+\\
+The graph shows that the the NOx exceeds 60 g/km/h after the crossing re-opens.
 This current simulation has the following Limitations:
@@ Line 146: / Line 166: @@
 The simulation above is just a proof of principle, without some sort of validation it is difficult to know how accurate or inaccurate the model is.
-There does appear to be a difference between the Auto Traffic Counts and the Manual Traffic Survey. The ATC was reporting 401 from west to east along the A352, the Survey had counted 561. From East to West, the ATC reported 452 where the Survey counted 371.
+There does appear to be a difference between the Auto Traffic Counts and the Manual Traffic Survey. The ATC was reporting 401 from west to east along the A352, the Survey had counted 561. From East to West, the ATC reported 452 where the Survey counted 371. This is probable because the ATC was taken in March, while most of the Survey data was taken in July and September.
@@ Line 169: / Line 189: @@
 __Note3:__ Open Rail Data http://nrodwiki.rockshore.net/index.php/Main_Page
+__Note4:__ SHMA available from https://m.dorsetforyou.gov.uk/purbeck-partial-review