Shane Turner

Shane Turner
Abley · Safe Systems

BE (Hons), PhD, CPEng, IntPE(NZ)

About

122
Publications
25,587
Reads
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465
Citations
Introduction
Shane is a Technical Director (Road Safety) and Research Leader at Abley (based in Christchurch, New Zealand). He is an Adjunct Senior Fellow in the Civil Engineering Department at the University of Canterbury. Shane is a Handling Editor for the Transport Research Record (TRR). He is a member of the TRB (USA) Pedestrian Committee (ANF10) and a former member of the Safety Data, Analysis and Evaluation (ANB20 or crash prediction modelling) committee. His research and consulting covers a number of transport fields but specifically road safety, especially for pedestrians and cyclists. He is currently an adviser for NCHRP Research Project 17-84, which is developing pedestrian and cycle crash prediction models (safety performance functions) for the USA Highway Safety Manual (HSM).
Additional affiliations
March 2019 - present
Abley
Position
  • Managing Director
July 2013 - March 2019
Stantec New Zealand
Position
  • Group Leader
June 2007 - present
University of Canterbury
Position
  • Fellow
Education
March 1991 - October 1994
University of Canterbury
Field of study
  • Transportation
February 1986 - October 1989
University of Auckland
Field of study
  • Civil Engineering

Publications

Publications (122)
Article
Although the number of deaths and injuries at level crossings in New Zealand is relatively low compared with the national road toll and injury burden, the high severity of crashes involving trains makes it a key “safe system” focus. It is also alarming that the proportion of crashes involving pedestrians and cyclists at level crossings has been inc...
Presentation
Full-text available
The number of vulnerable road user (pedestrians, cyclists, motorcyclists, and micro mobility) trauma crashes (deaths and serious injuries) in many cities in the western world has either plateaued or increased over recent years. One of the key challenges for addressing VRU risk in the network is the stochastic nature of reported crashes. Simply impr...
Presentation
Full-text available
Presentation on LCSIA process developed for KiwiRail
Presentation
Full-text available
Presentation on Safe System Assessment Framework for VRUs on mixed use arterials
Presentation
Full-text available
Presentation of the NZ Speed Management Guide and its application to Auckland Speed Limit Review
Presentation
Full-text available
Outline of the NZ speed Management Guide and how it aligns to the safe system approach
Article
Achieving safe system or vision zero outcomes at high-risk urban intersections, especially priority cross-roads and high-volume traffic signals, is a major challenge for most cities. Even after decades of crash analysis and improvement works many of these intersections still perform poorly. While best practice for optimising the efficiency of inter...
Conference Paper
Achieving safe system or vision zero outcomes at high-risk urban intersections, especially priority cross-roads and high-volume traffic signals is a major challenge for most cities. Even after decades of crash analysis and improvement works many of these intersections still perform poorly. While best practice for optimising the efficiency of inters...
Article
Alternative intersection layouts may reduce traffic delays and/or improve road safety. Two alternatives are reviewed in this research: 'priority-controlled Seagull intersections' and ‘priority-controlled intersections with a Left Turn Slip Lane’. Seagull intersections are used to reduce traffic delays. Some do experience high crash rates, however....
Presentation
Full-text available
Achieving safe system or vision zero outcomes at high-risk urban intersections, especially priority cross-roads and high-volume traffic signals, is a major challenge for most cities. Even after decades of crash analysis and improvement works many of these intersections still perform poorly. While best practice for optimising the efficiency of inter...
Research
Full-text available
List of my Publications
Conference Paper
Full-text available
While the number of deaths and injuries at level crossings in New Zealand is relatively low compared with the national road toll and injury burden, the high severity of crashes involving trains makes it a key 'safe system' focus. It is also alarming that the proportion of crashes involving pedestrians and cyclists at level crossings has been increa...
Article
Urban arterials and intersections account for a large proportion of high severity crashes in Australia and New Zealand, particularly involving vulnerable road users. Safety gains appear to be slower in these ‘mixed use’ environments than in other areas. Austroads commissioned research to help identify solutions that might be applied on mixed use ar...
Conference Paper
Full-text available
Like many large cities Auckland's busy and high-risk arterials carry the bulk of traffic flows and include a mix of active/vulnerable road users (cyclist / motorcyclist / pedestrian). Auckland Transport is adopting Vision Zero and understanding vulnerable road user crash risks on such routes can be difficult due to the wide variety of factors that...
Technical Report
Full-text available
A number of alternative intersection layouts are used around the country to reduce traffic delays and to improve road safety. One such group of alternative intersections are termed ‘priority controlled seagull intersections’. Seagull intersections are often used on roads to reduce traffic delays as they allow right-turning traffic from the side roa...
Conference Paper
Full-text available
A number of alternative intersection layouts may reduce traffic delays and/or improve road safety. Two alternatives are reviewed in this research; 'priority controlled Seagull intersections' and intersections with a Left Turn Slip Lane. Seagull intersections are used on roads to reduce traffic delays. However, some do experience high crash rates. W...
Conference Paper
Urban arterials and intersections account for a large proportion of high severity crashes in Australia and New Zealand, particularly involving vulnerable road users. Safety gains appear to be slower in these ‘mixed use’ environments than in other areas. Austroads commissioned research to help identify solutions that might be applied on mixed use ar...
Presentation
Full-text available
St Kilda Road is Melbourne's premier boulevard and is one of the busiest tram routes in the world. It also has a high incident of pedestrian and bicycle crashes due to the relatively poor standard of the facilites provided for these users. For cyclists this consists of a 1.5m painted cycle-way between parked cars and live traffic travelling at 60km...
Conference Paper
In New Zealand the majority of rural intersection fatal and serious crashes occur at rural priority 27 T-intersections. While most intersections have a standard layout higher volume intersections 28 often have alternative layouts that include auxiliary lanes and/or channelization. Two alternative 29 intersection layouts are reviewed in this researc...
Article
Full-text available
Purpose: Over the past 10 years, building on road infrastructure data, crash prediction models (CPMs) have become fundamental scientific tools for road safety management. However, there is a gap between state-of-the-art and state-of-the-practice, with the practical application lagging behind scientific progress. This motivated a review of internati...
Technical Report
Full-text available
This report contain all the SPFs/CPMs, AMFs/CMFs and some of the severity factors used in New Zealand. Many of which come from research by Shane Turner and others. The CEC is part of the NZ Economic Evaluation Manual. Mote also the High Risk Intersection Guide (HRIG) and High Risk Rural Road Guide (HRRRG) for other useful information.
Conference Paper
Full-text available
Railway level crossings should be a key focus of the safer system approach as the consequence of crashes involving trains is often death or serious injury. While the number of deaths and serious injuries at level crossings in New Zealand is relatively low compared with the overall road toll, it is alarming that the proportion of crashes involving v...
Technical Report
Mixed use urban arterials account for a large proportion of high-severity crashes in Australia and New Zealand, particularly involving vulnerable road users. These roads often include a mixture of different road user types including pedestrians, cyclists and motorcyclists, and carry a wide variety of vehicle types including cars, buses and delivery...
Conference Paper
Full-text available
Over the past ten years, crash prediction models (CPMs) have become the fundamental scientific tools of road safety management. However, there is a gap between state-of-the-art and state-of-the-practice, with the practical applications lagging behind scientific progress. This motivated the review of international experience with CPMs from the pract...
Conference Paper
Full-text available
Accident occurrence is typically low at rural priority controlled intersections, due to low traffic volumes, compared with priority controlled urban intersections. Unlike many urban intersections, the low accident occurrence makes it difficult, from the accident history alone, to identify accident trends and justify improvement projects. This resea...
Conference Paper
Full-text available
Brunei have made considerable investment in improving the design and safety of their road transport infrastructure over the last 20 years. Like almost all countries, Brunei (on the island of Borneo) are still not happy with the level of road trauma (fatal and serious injury crashes) on their roads and the impact this has on families and communities...
Conference Paper
Full-text available
A number of priority intersection enhancements are used to reduce traffic delays and improve road safety. This includes various types of seagull intersection layouts and the additions of right turn (right turn bays) and left-turn slip lanes (LTSL). There are however safety concerns with some seagull intersections and LTSL. The purpose of this resea...
Conference Paper
Full-text available
The Fiji Government have set a target of reducing the number of fatal crashes per 10,000 vehicles by half during the United Nations Decade of Action for Road Safety (2010 to 2020). The National Road Safety Action Plan includes a number of initiatives across Government that look to produce safer roads, safer drivers and safer vehicles. The Fiji Road...
Conference Paper
Full-text available
Most of the geometric design requirements that are specified or recommended in New Zealand (and Australia) roadway design guidelines pre-date the development of models and factors that relate crashes to design elements. Given the uncertainty around safety performance, design guidelines do include margins of safety at varying levels on each design e...
Technical Report
Best practice guidelines (as of 2015) on assessing LED billboards in New Zealand based on overseas and local guidelines and research.
Presentation
Full-text available
Overview of the Presentation Traditional Crash (Accident) Investigation (Reactive Approach) Crash Prediction Research Safety Performance Functions (SPFs) Crash Modifying Factors (CMFs) Crash Prediction Tools - iRAP Star Ratings (Proactive Approach) Application of iRAP in Fiji and Brunei Advanced application of CPM in New Zealand
Presentation
Full-text available
Overview of Safer Speeds Research to Industry across several NZ centres. Topics included: Why Safer Speeds is important Study Objectives Literature Findings Speed Compliance with Reduced Speed limits – Hamilton Suburban 40km/h areas – SH2 90km/h Safer Speed zone – Hastings 80m/h speed zones Acceptance Survey – web survey
Presentation
Full-text available
Outline of Presentation: Central location for all NZ crash rates and crash prediction models, Explanation of the various crash rate and model types, Crash rates - Rural, Link CPMs – Urban (and Rural), Intersection product of flow models, Intersection conflicting flow models, Other site types (bridges, railway crossings and curves), Rural passing l...
Conference Paper
Full-text available
BEST ROAD SAFETY PRESENTATION As part of their commitment to UN decade of action of road safety (2010 to 2020) the Fiji Government are looking to half the number of serious and fatal crashes on their network by 2020. The national road safety strategy includes a number of initiatives across Government that look to produce safer roads, safer drivers...
Technical Report
Full-text available
A key element of the Safer Journeys national road safety strategy is safer speeds. In some cases, particularly where investment to make roads safer at current speeds cannot be justified, this means reduced speed limits for both urban and rural roads. This research considered the level of acceptance of and compliance with reduced speed limits. It ex...
Presentation
Full-text available
Many cities and town across New Zealand and Australia have strategies and policies to promote cycling. While many are seeing an increase in cycling there is a large proportion of potential cyclists that are ‘interested but concerned’, primarily because of the perceived danger of cycling. To address this concern cycle planners and designers want t...
Conference Paper
Full-text available
A key element of the Safer Journeys national road safety strategy is safer speeds. In most cases this means lower speeds, both urban and rural. This research considers the level of acceptance of reduced speed limits and forms part of a NZTA research project on the compliance and acceptance of safer speeds. Both aspects are important as higher level...
Technical Report
Full-text available
This study conducted in New Zealand in 2012 investigated the attitudes, prevalence, habits and self reported risks associated with drug-driving, along with possible countermeasures. Telephone and internet surveys were used for a general population sample. Face-to-face interviews, mainly in prisons, surveyed habitual users of four main drug types:...
Presentation
Overview: Fiji Crash Trends, Decade of Action for Road Safety Strategy & Targets, 2011 to 2020 National Action Plan, Fiji iRAP Analysis and Safer Roads Investment Plan, Key Focus Areas – from observations, NeSA Demonstration (crash database), High Level Strategy Report outcomes, Project Showcase – guard railing, delineation & black-spots.
Conference Paper
Full-text available
A key element of the Safer Journeys national road safety strategy is safer speeds. In most cases this means lower speeds, both urban and rural. This research considers the level of compliance of reduced speed limits and forms part of a NZTA research project on the compliance and acceptance of safer speeds. It examines information from a number of s...
Conference Paper
Full-text available
Road safety professionals have a relatively good understanding of the 'objective' crash reduction benefits of the majority of 'generic' safety improvement measures, but generally a lower level understanding of perceived risk. Perceived risk is important as drivers behavour is linked to how safe they think a specific section of road is. Road safety...
Article
Full-text available
Roundabouts are hastily spreading around the world, mainly because of their good safety performance, and several countries have recently updated their standards and guidelines. However, inconsistencies in design standards and practices are observed. In this paper, a critical review of the Australasian, EU, and US standards and guidelines is perform...
Article
Full-text available
Because the quality of decision making in road safety is dependent on the quality of the data on which decisions are based, efforts to improve the quality, timeliness, and accuracy of crash databases are crucial. A critical review of Australasian, European Union, and U.S. crash databases was performed, and future directions were identified. Major i...
Conference Paper
Full-text available
A significant proportion of urban crashes, especially serious and fatal crashes, occur at traffic signals. Many of the black-spots in both Australia and New Zealand cities occur at high volume and/or high speed traffic signals. Given this, crash reduction studies often focus on the major signalised intersections. However, there is limited informati...
Article
A significant proportion of urban crashes, especially serious and fatal crashes, occur at traffic signals. Many of the black-spots in both Australia and New Zealand cities occur at high volume and/or high speed traffic signals. Given this, crash reduction studies often focus on the major signalised intersections. However, there is limited informati...
Technical Report
Full-text available
This research project investigated the economic impacts of transport and road space reallocation in shopping areas located in central cities and along major transport corridors in New Zealand. It focused on three research questions. The first being to understand the retail spending of transport users; resulting in data that provides an average $ sp...
Presentation
Full-text available
Outline of Presentation: Design trade-offs – traditional and new methods Methods used in NZ Crash Prediction Models (CPM) CPMs for Traffic Signals CPMs for Roundabouts Current Tools that can assist in undertaking design trade-offs
Conference Paper
Full-text available
Road safety risk assessment tools are increasingly being used in New Zealand to help understand the crash risk on roads, at intersections and other sites (eg. bridges and railway crossings). Two such tools for rural roads are the KiwiRAP road ratings and RISA (Road Infrastructure Safety Assessment). KiwiRAP has been used to assess the relative safe...
Conference Paper
Full-text available
In order to address the safety and efficiency issues out on the transport network, traffic and road safety engineers often come up with innovative design solutions. The safety of such schemes can be difficult to assess given that most of the safety research has been developed for standard intersections. For example in the Economic Evaluation Manual...
Presentation
Full-text available
WINNER OF BEST PRESENTATION/TOPIC The majority of urban crash black-spots occur at traffic signals. A significant proportion of serious and fatal urban crashes occur at major traffic signals. There is limited research on the effects of signals phasing, congestion and layout variables (iRAP research topic). The research that is available does not c...
Article
Full-text available
Crash data collection is crucial for road safety improvement, but Italy is considerably behind the best international practices. To help to bridge this gap, a critical review of international crash databases was carried out and recommendations for improvement of the Italian police crash data collection and the national crash database were formulate...
Article
Full-text available
The paper presents a critical review of the Australasian, EU and US roundabout geometric design standards and guidelines and identifies inconsistencies of the Italian roundabout standard which deserve improvement. As a result, recommendations for improvement of the Italian standard are proposed. These recommendations are mainly based on the concept...
Conference Paper
Full-text available
The safe system approach adopted in New Zealand and Australia includes a move towards safer speeds. Safer speeds are those where the probability of a serious or fatal crash for the driver and other road users is low if a crash was to occur. In most cases this means lower speeds, especially in areas with high volumes of active (or vulnerable) road u...
Conference Paper
Full-text available
Although many local councils in Australasia have been developing cycle networks for over 15 years, the proportion of people cycling is declining. The key barrier to encouraging more cycling is the need to address actual safety, perceived safety and personal security concern. To encourage more cycling, a key question we need to answer is, 'Are we ac...
Technical Report
Full-text available
In most cities and towns, the majority of crash black-spots occur at major intersections. Given this, crash reduction studies often focus on the major signalised intersections. However, there is limited information that links the phasing configuration, degree of saturation and overall cycle time to crashes. While a number of analysis tools are avai...
Conference Paper
Full-text available
Safety and efficiency are often compromised on mixed use arterials. On most routes, the motor-vehicles needs dominate and the needs of other modes of transport, including those of pedestrians and bicycles, are not well served. Over the last decade the importance of providing for the safety and efficiency of other modes of transport has increased in...
Conference Paper
Full-text available
The majority of fatal and serious crashes in New Zealand occur on rural two lane roads. Data on historic crash patterns is not always sufficient to enable a suitable diagnosis of the safety deficiencies of various section of this rural road network. It also cannot readily identify safety issues on low volume roads and shorter sections of highway, w...
Conference Paper
Full-text available
Retailers often object to road space reallocation projects as they often believe such schemes will negatively impact on their businesses, primarily as a result of loss of parking. The reason parking is considered vital is that local business owners often overestimate the importance of car based business and underestimate the value of cyclists and p...
Technical Report
Full-text available
Rural Road SPFs/CPMs for the New Zealand State (National) Highway network
Article
After decades of decline, recreational and commuter cycling are becoming more popular in many Australasian cities. This renewed popularity is encouraging from the perspectives of sustainable transport and public health. A major concern to governments at all levels, however, is the higher crash risk that cyclists face, compared with drivers or passe...
Article
Full-text available
Comparisons of crash frequencies often seek to establish how a country is performing relative to others in road safety experience. While such comparisons can be quite useful from a high-level management perspective, they are less useful in comparing the relative safety of roadway designs within and among countries at a road element (e.g. signalised...
Conference Paper
Full-text available
Urban designers and many other professionals, including many transport professionals, acknowledge that walking is a very important mode of transport in most urban areas and that the amount of walking that takes place is closely related to how liveable a city or town is considered to be. Walkability is a term that is used to specify "the extent to w...
Conference Paper
Full-text available
Retailers often object to road space reallocation projects as they often believe such schemes will negatively impact on their businesses, primarily as a result of loss of parking. The reason parking is considered vital is that local business owners often overestimate the importance of car based business and underestimate the value of cyclists and p...
Presentation
Full-text available
Engineers utilise a large number of Guidelines and Standards to make decisions, What do we do when we can’t meet the desirable or minimum standards? We look for evidence to support a lower standard or use engineering judgement – to make design trade-offs Even when we follow the guidelines we don’t always get the desired results – safety or otherwis...
Technical Report
Full-text available
This research provides a number of mathematical formulas for predicting the quality of the walking environment from the perspective of the user using operational and physical variables. The formulas were derived by combining the perception data gathered from participants in the community street reviews with measurements of the walking environment....
Technical Report
Full-text available
This study focused on the safety impacts of providing cycle facilities, in combination with a number of other features, such as width of approach kerbside lane, at traffic signals. A review of facilities provided and information available was undertaken across each of the Austroads jurisdictions. It was necessary to locate sites where cycle facilit...
Conference Paper
Full-text available
This paper presents results from two research studies which quantify the impacts of various facilities on cyclist and pedestrian crash rates. The study of cycle safety has focused on the safety impacts of various cycle facilities, in combination with a number of other features, such as width of approach kerbside lane and whether left lane is shared...
Technical Report
Full-text available
The majority of fatal and serious crashes in New Zealand occur on rural two-lane roads. Data on historic crash patterns is not always sufficient to enable a suitable diagnosis of the safety deficiencies of various sections of this rural road network. It also cannot readily identify safety issues on low-volume roads and shorter sections of highway,...
Presentation
Full-text available
SUBCOMMITTEE MEETING - SUMMARY OF FIVE KEY STUDIES Pedestrian and Bicycle Flow-only SPFs Mid-block Bicycle Safety – geometric features Bicycle Safety at Roundabouts Safety of Cycle Facilities at Traffic signals Pedestrian Safety at Traffic Signals
Conference Paper
After decades of decline, recreational and commuter cycling is becoming more popular in many Australasian cities. While this is encouraging from a sustainable transport and public health perspective, a major concern to national, state and local governments is the higher crash risk faced by cyclists compared with drivers or passengers in motor-vehic...