Role / function	How it's used	Why a speed reduction has been proposed over other measures
Brighton Mall is a Civic Space providing connection to delivery vehicles and pedestrians to businesses within the Brighton Mall.	Service delivery vehicles to the businesses, emergency services, and pedestrians.	No other speed management intervention is being proposed, aligning the posted speed limit to the Role and Function of the road.

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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:

• An assumed 0% growth because it is not a through route.
• The implementation costs reflects the cost of installing speed limit signs at the entry side.