Shared Space - Auckla nd Operational Safety Study Bruno Royce 2 - - PowerPoint PPT Presentation

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Shared Space - Auckla nd Operational Safety Study Bruno Royce 2 - - PowerPoint PPT Presentation

Oct 20, 2022 49 likes •482 views

Shared Space - Auckla nd Operational Safety Study Bruno Royce 2 Conclusions: Shared Spaces more likely to be successful if their design includes: - Key Features - Desired Features. 3 Design Lower Higher Safety & Features Speeds

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Shared Space - Auckland

Operational Safety Study

Bruno Royce

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Conclusions:

Shared Spaces more likely to be successful if their design includes:

  • Key Features
  • Desired Features.
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Design Features Higher Safety & Amenity Lower Speeds

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What is an Auckland Shared Space…?

  • A road shared by people and motorists;
  • Motorists give-way to people;
  • Traditional roadmarking, signs & kerbs replaced with a level surface;
  • Restricted loading & no parking.
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5 Spaces currently

  • perating in

Auckland CBD were surveyed

Where are the Auckland Shared Spaces…?

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What did the study involve…?

  • Site and video surveys all day;
  • International literature review.
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Key Features

Shared Space

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Key Features

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Key Features

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Key Features

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Key Features

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Key Features

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Auckland’s Key Features

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Gateway – Entrance

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Gateway – Exit

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Level Textured Paving

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Accessible / Activity Zones

Fort Lane (neither) Darby St (only one side)

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Desired Features Shared Space

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Desired Features

  • 1. Low Traffic Speeds
  • 2. Low Traffic Volumes
  • 3. Good Road Safety
  • 4. High Pedestrian Volumes
  • 5. Active Building Frontage
  • 6. Circulation Zone Lateral Shift
  • 7. Circulation Zone Narrow Width
  • 8. Low/Moderate Loading / No Parking
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Auckland’s Desired Features

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Traffic Speeds

Speeds (85thtile) should be <= 20km/h Auckland spaces >= 20km/h

2 spaces were around 25km/h - Fort Street (east) & Federal Street

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Traffic Volumes

Volumes <= 100 vph or 1,000 vpd

Most Auckland spaces satisfactory

2 spaces > 3,000vpd - Fort Street (west) & Federal St

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Pedestrian Volumes

 Higher volumes = more successful space.  Relatively high pedestrian volumes (>= 1,000 pph):

  • Elliott Street;
  • Jean Batten Place;
  • Fort St (west)

 Relatively low pedestrian volumes (around 200 pph):

  • Fort Lane
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Building Frontage

Active building frontage = More Pedestrians

 Fort Ln  Fort St (east)  Federal Street (south section)

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Circulation Zone Lateral Shift

Lateral shift = slower speeds (particularly on long midblock sections (>50m)).

Two Shared Spaces had issues due to lack of shift:  Fort St (east)  Federal St

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Drainage Channel Position

Do not align channel along circulation zone Auckland’s channels are alongside  Fort St (east)  Federal St

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Circulation Zone ‘Side Friction’

 ‘Side Friction’ = Slower Speeds  Greater ‘side friction’ is created with narrow circulation zone and more permanent bulk/height street furniture;  Some Auckland spaces have limited ‘side friction’, particularly:  Fort St (east)  Federal Street  Darby Street

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Pedestrians On Circulation Zone

Pedestrians using circulation zone = more successful space Two Auckland spaces had low %:  Fort St (east)  Federal St

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Motorists Yield To Pedestrians

Motorists yield to pedestrians = lower vehicle dominance

Fort St (west) had particularly good result:

 Fort St West (high pedestrian volumes, slow speeds, and vehicle queuing)

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Pedestrians Crossing

High volumes + Many Locations + Indirect Crossing = Lower vehicle dominance

 Federal – Crossing directly  Darby – wandering across

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Large Vehicles

High numbers = vehicles dominate

 Federal St – High Numbers of Large vehicles (7 % of traffic) & high traffic volumes

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Legal Loading & No Parking

Extensive illegal loading and parking observed in Auckland 2 Spaces in particular:  Federal Street  Fort Street (East)

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Public Perception

Public survey indicated most of the public (60%) considered the spaces were working well as a Shared Space Federal Street only 48% support

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Safer Road?

Based on reported crashes, over 2-4 years, ‘before’ and ‘after’:  Fort St (west), Fort Lane and Jean Batten Pl = Safer  Elliott, Darby and O’Connell Street spaces = Neutral  Federal St and Fort St (east)

< non-injury crashes; > crash severity (by 1 on each space).

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Key Conclusions

 Auckland’s Shared Spaces were reasonably successful in terms of safety, amenity and operational performance  Speeds were considered excessive at 2 spaces

  • Federal and Fort St (east)

 Volumes were considered excessive at 2 spaces

  • Federal and Fort St (west)
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Key Recommendations

To optimise success include:

  • All Key Features
  • Most Desired Features
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In particular, keep speeds low with:

  • Lateral Shift of the circulation zone (if block length >50m)
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…and:

  • Side Friction of the Circulation Zone
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Thank you.