Intersections

Designing or reviewing intersections (especially signalised ones) is a specialist discipline. There is a need to ensure that the layout, design, and operation meets the safety and efficiency needs of all types of users through the intersection, as well as considering the practical and legal implications of details like different signal phasing options.

Collectively, ViaStrada staff have designed, reviewed, audited, or optimised hundreds of roundabout, signalised, and other intersections. As consultants, we work on behalf of central government agencies, road controlling authorities, and developers.

Aerial view of a roundabout in Christchurch

Projects

Leith Street Design Concept - Dunedin

ViaStrada's strategic walking and cycling network review in 2024 identified Leith St as a secondary cycle route with a suggestion that it will be a …

Waimakariri Junction Intersection

Traffic engineering and signalised intersection with Smith Street adjacent to SH1 for a large format retail centre. 

Greers / Wairakei Parking Assessment

Greers Road shops in Christchurch currently has angled parking which is being investigated to be installed as parallel parking to improve safety for …

Hone Heke / Cobham roundabout

Kerikeri is growing fast, and with growth comes traffic congestion. The Hone Heke / Cobham intersection is becoming more and more difficult to …

Whakatāne roundabout projects (x2)

ViaStrada specialises in safe, user-friendly roundabout designs. These roundabouts had unique design challenges to tackle; one constrained by …

Main North Road optimisation

In order to optimise the function and safety of the route by mode and time of day, ViaStrada (with Aurecon as a sub-consultant) conducted site audits …

Guppy / Meeanee intersection detailed design

In August 2018, ViaStrada prepared a scheme report assessing capacity and safety issues (including sight lines to oncoming traffic) for the signalised …

Te Tuaiwi traffic signals

ViaStrada was contracted by Whanganui District Council to design or retrofit five sets of signalised intersections so that the Te Tuaiwi pathway could …

Blenheim roundabout upgrade

Marlborough Roads engaged ViaStrada to develop an improved roundabout design for the Alabama Road and Weld Street intersection. This site has …

Palmerston North roundabout safety audits

PNCC engaged ViaStrada to undertake scheme/detail design and post-construction stage road safety audits of a number of roundabout upgrades at city …

Red light camera pilot evaluation report peer review

ViaStrada was commissioned by Auckland Transport to edit and review a red light camera pilot evaluation draft report and provide an international …

Albert/Grey Roundabout design audit, Palmerston North

Preliminary design stage safety audit of a proposed roundabout at the intersection of a local road and a collector road. The roundabout is to replace …

Dakota Park roundabout

ViaStrada was commissioned by Christchurch International Airport Ltd to conduct a review of a proposed roundabout at the airport.The objective of the …

Green Lights for Bikes

The Melbourne office of SKM engaged ViaStrada to peer review its draft report Green Lights for Bikes, a report on how road authorities can use a range …

Clarence Street and Dilworth Street traffic signals

As part of the Westfield expansion of Riccarton Mall, the intersection of Clarence Street and Dilworth Street was converted from a give way …

Avonside Fitzgerald Kilmore signalised intersection

The Avonside / Fitzgerald project has two 'drivers': The Fitzgerald bridge over the Avon River needs to be earthquake strengthened, and the adjacent …

Kawarau Falls single lane bridge traffic signals

Traffic signal improvements to the Kawarau Falls single lane bridge, to meet Transit NZ safety and efficiency requirements, to allow the side road to …

Bunnings in Marshland, Christchurch

When the new Bunnings site on Marshland Road was developed, traffic signals were needed to ensure safe site access. ViaStrada was engaged to undertake …

Audit of 10 sets of traffic signals

This report presents the findings of an audit of a sample of 10 of the traffic signal controlled intersections operated by DCC. The purpose of the …

Dunbars / Halswell intersection, Christchurch – proposed signalisation

Halswell Road is part of SH 75 through Christchurch, with Transit NZ intending to signalise the intersection. Christchurch City Council tasked …

Lowther St (Christchurch) queue and delay study

Christchurch City Council commissioned ViaStrada to undertake a queue and delay study on the Lowther Street approach to Main South Road (SH73A), where …