Street	Role / Function	How it's used	Why a speed reduction has been proposed over other measures
Madras Street	Activity Street, provides access to and from the central city and also a northern connection across central city area	Motorists, cyclists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
Tuam Street	Urban Connector, provides access to and from the central city	Motorists, public transport, cyclists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
Lichfield Street (west)	Activity Street, provides a space for people	Motorists, cyclists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
Lichfield Street (east)	Local Street, provides access to businesses along Lichfield Street (east)	Motorists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
Duke Street	Local Street, provides access to businesses along Duke Street	Motorists	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
Hereford Street	Urban Connector, provides access to and from the central city	Motorists, public transport, cyclists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
St Asaph Street	Activity Street, provides access to the central city	Motorists, public transport, cyclists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.
Barbados Street	Urban Connector, provides access from the central city.	Motorists, cyclists and pedestrians	Raised platforms were unable to be considered due to floor level of the neighbouring properties, our inability to lower to road or accommodate the stormwater capacity/capability necessary to attempt raised platforms.

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 the assumption of no growth in daily traffic volumes.
• The implementation cost reflects the cost of installing speed limit signs around the edge of each speed limit zone.