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Auckland Transport

Herne Bay cycling and walking improvements Herne Bay cycling and walking improvements

Auckland Transport (AT) proposes making changes to Herne Bay streets to encourage slower driving speeds and improve routes for people walking and cycling in the area.


Project status: Design
Project zone: Central


Project overview

The proposed improvements in Herne Bay are part of a wider cycling network we are creating from Pt Chevalier to the city. The proposal stems from feedback received during our March 2016 consultation, including concerns from the Herne Bay Residents Association about speeding and 'rat running' (using residential side-streets instead of main roads) in the area.

Initially, the preferred option was to provide a connection for people on bikes via Clifton Road, Argyle Street, and Sarsfield Street. However, after taking feedback on board, AT has investigated implementing traffic-calming measures (known as "treatments") on several streets rather than a cycle lane on a particular street.

These treatments aim to address the community issues, enhance the look and feel of the Herne Bay area, and improve routes for local people walking or cycling to their local shops, beaches and cafes, or to get to work and attractions in the city centre.

Making physical changes (such as speed tables) to roads is also more effective than changing the speed limit, as the treatments do not rely on speed cameras or a police presence to reduce speed. Similar changes to residential streets in Sandringham and Balmoral have reduced speeds by 5 to 15km/h and made the streets safer and quieter.

Benefits

  • A slower-speed environment, increasing safety for drivers and cyclists.
  • Reduced rat running.
  • A coherent, attractive route for people on bikes.
  • A safer and more enjoyable environment for pedestrians and children.
  • Enhanced local streets, making them more attractive to residents and road users.
  • Minimised loss of parking.

Timeline

  • November/December 2016 - Consultation on Herne Bay traffic-calming treatments.
  • April/May 2017 - Additional consultation on improvements to Curran/Sarsfield St intersection.
  • July 2017 - Consultation feedback report.
  • Early 2018 - Detailed design.
  • March 2019 – construction.

Traffic calming

Locations

  • The proposal area starts at the Curran Street and Sarsfield Street intersection in Westhaven, runs along Sarsfield Street, and connects with 5 streets between Sarsfield Street and Jervois Road.
  • The area north of Sarsfield Street and Curran Street intersection is not included as it is still under investigation.

Updated design

We have undertaken a review to ensure the design achieves the key objective of reducing vehicle speeds to 30km/hr, and aligns with the latest Transport Design Manual (TDM) standards.

As a result we have made some changes to the design originally proposed. These changes relate to a new recommended desired spacing between speed treatments, reduced from 80m-120m to 50m-80m. Closer spacing more effectively reduces speeds to 30km/h by discouraging people from speeding up in-between treatments, keeping traffic to more uniform, lower speeds. It also reduces vehicle noise associated with acceleration and deceleration.

We can’t always achieve the exact spacing, due to the locations of driveways and utilities/ manhole covers, but have endeavoured to align with the standards within these constraints.

While reviewing the treatment spacing we also took into consideration feedback received during our consultation and sought to:

  • Minimise parking removal.
  • Avoid road narrowing.
  • Ensure treatments are gently angled to minimise noise and are suitable for cyclists.

Improvements we have made

To achieve closer treatment spacing and address some of the concerns raised by residents, we have increased the number of mid-block treatments and changed the treatment type from speed table to sinusoidal hump. This means some previously proposed mid-block locations have changed.

Sinusoidal speed humps have been choosen because:

  • Vehicles can park on them (provided there are no existing parking restrictions).
  • They are relatively easy to locate and relatively unobtrusive.
  • Have a gentle profile (sinusoidal curve instead of ramp) and enhance the quality of service for people on bikes.

The sinusoidal speed humps will not have kerb build outs or planting, so that people can park on them. The humps will be approximately 3.7m in length, 10cm high, and constructed of bitumen, with ‘dragon’s teeth’ markings (shown in the photo above) – these provide a visual warning to people in cars and on bikes.

We have also added a T-intersection speed table at the intersection of Cremorne Street and Argyle Street. (See example Figure 2)

T-intersection Herne Bay

Figure 2: example of T-intersection speed table.

All other aspects of the design remain unchanged, including the T-intersection, cross intersection and boundary speed tables. Speed tables provide a safer crossing point for pedestrians at intersecting streets, and also act as a ‘gateway’ for drivers, signalling that they are entering a lower-speed zone.

The project plans show the locations for the new sinusoidal speed humps and speed table, as well as the intersection and boundary speed tables.

Parking

The new proposal overall retains 29 parking spaces that would otherwise have been lost in the 2017 proposal. This is because vehicles can park on the proposed sinusoidal treatments (provided there are no existing parking restrictions), so no parking will be removed at these sites. It is estimated that two parking spaces will be removed at the additional T-intersection speed table at Cremorne Street and Argyle Street.

Curran Street and Sarsfield Street

The design at this intersection is still being reviewed to ensure that people on bikes travelling west through the intersection can safely access Sarsfield Street.

Next Steps

Construction is expected to start March 2019 and take five months to complete, weather dependant.

Speed calming treatments

There are 4 different types of traffic-calming treatments:

Cross-intersection speed table

Cross-intersection speed table

Cross-intersection speed tables are proposed where local streets intersect with other local streets in all 4 directions.

T-intersection speed table

T-intersection speed table diagram

T-intersection speed tables are proposed where local streets intersect in a "T" shape (as opposed to a "+" shape).

Boundary speed table

Boundary speed table diagram

Boundary speed tables are proposed where local residential street intersect with arterial roads.

These tables act as a gateway for drivers, signalling that they are entering a lower-speed zone.


Feedback

In December 2016 we consulted on proposed traffic calming designs and received a high level of support (69%) for traffic calming in the Herne Bay area.

An additional consultation on improvements to the Curran Street and Sarsfield Street intersection was open from 13 April to 14 May 2017. The design at this intersection is still being reviewed to ensure that people on bikes travelling west through the intersection can safely access Sarsfield Street.

Feedback reports


For more information

Contact Auckland Transport