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SH76/SH1 Christchurch Southern Motorway speed limit review

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Project Introduction

The speed limit increased on the Southern Motorway from east of Curletts Road interchange at Addington to west of Weedons Interchange at Rolleston on Sunday 13 April 2025.

Christchurch Southern Motorway

The Southern Motorway is an important road that’s helped to reduce congestion and improve safety and travel time reliability. It’s an essential route for traffic travelling from the south of Christchurch, including inland ports at Rolleston, to the central city and Lyttelton Port. It’s also a strategic transport corridor for moving freight between southern regions.

  • Community engagement on proposed new speed limit

    As a requirement of the current Setting of Speed Limits Rule (2022), public consultation took place from 3 September to 1 October 2024.

    3,975 submissions were received in total with 3,485 of these from the Christchurch/Selwyn area. This included 6 submissions from organisations. 

    Most of the submissions we received (68%) support the proposed speed limit increase, with 66% strongly supporting. 31% did not support the proposed increase. 1% didn’t know. 

    Christchurch Southern Motorway 110km/h speed limit review consultation summary report – February 2025 [PDF, 984 KB]

    Location

    Description of location

    Length of road

    Current speed limit

    Proposed new speed limit

    SH76/SH1 Christchurch Southern Motorway

    From east of Curletts Road interchange, Addington, to west of Weedons Road interchange, Rolleston

    17.7kms

    100km/h

    110km/h

    Motorway on and off ramps at Curletts Road, Halswell Junction Road, Shands Road, Main South Road and Weedons Road interchanges and Berketts Road junction are included in the 110km/h speed limit. The sections of those ramps connecting to local roads are excluded.

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  • Enforcement

    Police apply the same enforcement to 110km/h roads as any other part of the road network. Drivers can expect to see Police patrols on New Zealand roads anywhere, at any time.

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  • Heavy vehicles

    The 90km/h speed limit for heavy vehicles and towing vehicles applies on 110km/h roads. Where there are two lanes in each direction, other drivers can safely and easily pass slower-moving vehicles

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