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

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?

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

    • 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 - Improve priority for pedestrians, cycles and buses - Improve safety - Improve their attractiveness/vitality• Whilst maintaining traffic capacity
    • Evolution of design process• Shared Space - lightly trafficked streets - moderately trafficked streets - Schwarzenburgstrasse Berne - Ashford - Poynton Phase 1
    • 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 junction Capacity• Emissions• Impact on bus operations• Impact on Cyclists• Safety.• Cost
    • 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
    • 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
    • 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
    • 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 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
    • 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
    • Ruthin Road – Bradley RoadRecent Junction Improvement Photios 24
    • Alternative Junction Configurations- Initial findings• Shared Space – Heavily trafficked – Await opening at Poynton with considerable interest
    • 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
    • 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 ?
    • 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
    • Finally• Reappraise our approach to street and junction design• Never a perfect design• Always requires compromise from the different users of the street