Beyond the low hanging fruit !             Chris Oakley        www.crowddynamics.com
Wide Spectrum of streets and junctions                        2
Whats the problem ?• Many streets will remain heavily trafficked• Can these be enhanced to       -   Reduce emissions     ...
Evolution of design process• Shared Space - lightly trafficked streets                 - moderately trafficked streets    ...
Evolution of design process
Poynton Phase 2 –Shared Space Heavily trafficked                                  6
Poynton Phase 2 –                    7
Evolution of design proces
Alternatives to Traffic Signals- Switch Off                         9
Traffic Signal Switch Off                            10
Analysis – Fountains Place JunctionTraffic Signal Switch off – Queue lengths
Traffic Signal Switch Off- Analysis                 UAF Simulation                        12
Example junction5 : Ruthin road/ Bradley RoadWrexham                       13
Alternative junction configurations    Comparison of alternatives• Pedestrian Amenity• Pedestrian Delay• Traffic Delay and...
Alternative junction configurations•Option 1 - Traffic signals with pedestrian stage•Option 2 - Mini Roundabout with puffi...
Alternative junction configurations   Shared space          Roundabout with zebras 5m back from stop lines   Roundabout wi...
Alternative junction configurations    Comparison of alternatives- Quantification• Pedestrian Amenity• Pedestrian Delay• T...
Pedestrian and traffic simulation                                    UAF
Pedestrian/Traffic Interaction at Junction                         19                                             UAF
Alternative junction configurationsPedestrian Travel time Analysis
Alternative junction configurationsEmissions Analysis
Comparison of OptionsRanking of Options in terms of Pedestrian priority        Ranking of Options in terms of Traffic     ...
Comparison of options - Safety      Ranking of options in terms of safety                                      Pedestrian ...
Ruthin Road – Bradley RoadRecent Junction Improvement  Photios                      24
Alternative Junction Configurations-  Initial findings• Shared Space – Heavily trafficked                  – Await opening...
Alternative Junction Configurations-  Initial findings• Shared Space - Heavily trafficked                  - Await opening...
Alternative Junction Configurations-   Initial findings• Shared Space - Heavily trafficked                   - Await openi...
Conclusions• Innovative and efficient design solutions are deliverable•Doesn’t have to be shared space, Cheaper more conve...
Finally• Reappraise our approach to street and junction design• Never a perfect design• Always requires compromise from th...
Chris Oakley, Director, Transport Planning & Strategy, Crowd Dynamics: Beyond the low-hanging fruit
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Chris Oakley, Director, Transport Planning & Strategy, Crowd Dynamics: Beyond the low-hanging fruit

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Beyond the low-hanging fruit: How can busier, more complex streets be better shared? How can modelling help?

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Chris Oakley, Director, Transport Planning & Strategy, Crowd Dynamics: Beyond the low-hanging fruit

  1. 1. Beyond the low hanging fruit ! Chris Oakley www.crowddynamics.com
  2. 2. Wide Spectrum of streets and junctions 2
  3. 3. Whats the problem ?• Many streets will remain heavily trafficked• Can these be enhanced to - Reduce emissions - Improve priority for pedestrians, cycles and buses - Improve safety - Improve their attractiveness/vitality• Whilst maintaining traffic capacity
  4. 4. Evolution of design process• Shared Space - lightly trafficked streets - moderately trafficked streets - Schwarzenburgstrasse Berne - Ashford - Poynton Phase 1
  5. 5. Evolution of design process
  6. 6. Poynton Phase 2 –Shared Space Heavily trafficked 6
  7. 7. Poynton Phase 2 – 7
  8. 8. Evolution of design proces
  9. 9. Alternatives to Traffic Signals- Switch Off 9
  10. 10. Traffic Signal Switch Off 10
  11. 11. Analysis – Fountains Place JunctionTraffic Signal Switch off – Queue lengths
  12. 12. Traffic Signal Switch Off- Analysis UAF Simulation 12
  13. 13. Example junction5 : Ruthin road/ Bradley RoadWrexham 13
  14. 14. Alternative junction configurations Comparison of alternatives• Pedestrian Amenity• Pedestrian Delay• Traffic Delay and junction Capacity• Emissions• Impact on bus operations• Impact on Cyclists• Safety.• Cost
  15. 15. Alternative junction configurations•Option 1 - Traffic signals with pedestrian stage•Option 2 - Mini Roundabout with puffin crossings on all arms•Option 3 - Traffic signals with pedestrian stage + scatter crossings•Option 4 – Mini Roundabout with zebra crossings on all arms (a) At 5m distance from roundabout (b) At 10m (c) At 20m•Option 5 – Shared Space concept
  16. 16. Alternative junction configurations Shared space Roundabout with zebras 5m back from stop lines Roundabout with zebras /puffins 20m back from stop linesSignals option with no Signals option with conventional Signals option with ‘all ways’pedestrian crossings pedestrian crossings pedestrian crossings
  17. 17. Alternative junction configurations Comparison of alternatives- Quantification• Pedestrian Amenity• Pedestrian Delay• Traffic Delay and junction Capacity• Emissions• Impact on bus operations• Impact on Cyclists• Safety.• Cost
  18. 18. Pedestrian and traffic simulation UAF
  19. 19. Pedestrian/Traffic Interaction at Junction 19 UAF
  20. 20. Alternative junction configurationsPedestrian Travel time Analysis
  21. 21. Alternative junction configurationsEmissions Analysis
  22. 22. Comparison of OptionsRanking of Options in terms of Pedestrian priority Ranking of Options in terms of Traffic Efficiency Amenity Delay Overall Overall Option 4 Option 5 Option 4/5 Existing Option 5 Option 4 Existing Option 4 Option 3 Option2 Option 2 Option 1 Option 3 Option 2 Option 1 Option 5 Existing Existing Option 2 Option 1/3 Option 1 Option 3 22
  23. 23. Comparison of options - Safety Ranking of options in terms of safety Pedestrian Site Review Research Overall & Statistics Traffic signals Mini Roundabout with Traffic Signals Traffic Signals puffins Mini Roundabout with zebras Signals with scatter Mini roundabout with crossings zebra or puffins Mini Roundabout with Signals with scatter Traffic Signals with zebras crossings Scatter crossings Existing Existing Existing Mini Roundabout with Shared Space Shared Space Puffins Option 5
  24. 24. Ruthin Road – Bradley RoadRecent Junction Improvement Photios 24
  25. 25. Alternative Junction Configurations- Initial findings• Shared Space – Heavily trafficked – Await opening at Poynton with considerable interest
  26. 26. Alternative Junction Configurations- Initial findings• Shared Space - Heavily trafficked - Await opening with considerable interest• Traffic signal switch offs - Can significantly reduce delay. - Issue of pedestrian amenity , but not delay
  27. 27. Alternative Junction Configurations- Initial findings• Shared Space - Heavily trafficked - Await opening with considerable interest• Traffic signal switch offs - Can significantly reduce delay. - Issue of pedestrian amenity , but not delay• Alternatives to signals – -Typically more efficient in terms of traffic movement -Reduce emissions. -Pedestrian delay typically reduced. -Safety ?
  28. 28. Conclusions• Innovative and efficient design solutions are deliverable•Doesn’t have to be shared space, Cheaper more conventional solutionspossible.• Emissions can be reduced• Comparative analysis of wide range options now possible• Modelling has vital role in refining/optimising schemes• Need further study and demonstration projects
  29. 29. Finally• Reappraise our approach to street and junction design• Never a perfect design• Always requires compromise from the different users of the street

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