Road	Role / function	How it's used	Why a speed reduction has been proposed over other measures
Cashmere Road	Local Streets, providing connection and access to properties.	Residents connecting to and accessing their properties, pedestrians connecting to the wider network and cyclists travelling through.	Alignment of existing corridor does not allow for speed management interventions.
Cashmere Road	Peri-urban Roads, provide connection to properties.	Residents connecting to and accessing their properties, pedestrians connecting to the wider network and cyclists travelling through.	Speed limit being used to provide a corridor treatment for both residents accessing their properties and people connecting to Te Kuru wetlands.
Sutherlands Road	Local Streets, providing connection and access to properties.	Residents connecting to and accessing their properties, pedestrians connecting to the wider network.	Already speed management interventions on corridor.
Hoon Hay Valley Road	Peri-urban Roads, provide connection to properties.	Residents accessing their properties.	Speed limit being changed to align with Cashmere Road and last section of Hoon Hay Valley Road

If you have any issues viewing the table, a pdf version is available here.

Data sources:

Existing speed limit	NZTA National Speed Limit Register
Proposed speed limit	Consultation
Number of crashes in the last five years	NZTA Crash Analysis System
Estimated reduction in the number of crashes each year	Calculated using the NZTA Optional Cost Impact Analysis Tool
Current average operating speed	TomTom traffic data
Estimated average operating speed when new speed limit is in place	Calculated using the NZTA Optional Cost Impact Analysis Tool
Estimated impact on individual travel time	Calculated using the NZTA Optional Cost Impact Analysis Tool
Estimated impact on collective travel times	Calculated using the NZTA Optional Cost Impact Analysis Tool

Additional notes:

• The estimated impacts in the cost benefit disclosure statement are based on 1% growth in daily traffic volumes.
• The implementation cost reflects the cost of installing speed limit signs around the edge of each speed limit zone.