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- Kallberg, Veli-Pekka, et al.
(författare)
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MASTER – Managing Speeds of Traffic on European Rods. Final Report.
- 1999
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The content of the European research project MAnaging Speeds of Traffic on European Roads (MASTER) is presented. Speed management is described as a two-step process where target speeds for different kinds of roads are determined first, and then various measures and tools are applied in order to adopt such speed. Current practice and main problems in speed management are described. The various impacts of speed and the factors affecting drivers’ choice of speed as well as the various speed management measures and tools are discussed. Basic principles of rational speed management are outlined on these grounds. Finally, recommendations for further development of speed management and research needs are formulated. It is recommended that target speeds on different kinds of roads are determined on the basis of systematic and comprehensive assessment of all impacts of speed. The recommendations concerning speed management measures and tools include, for example, harmonisation of speed limits in different European countries, development of European guidelines for urban speed management, further development and wider use of automated speed enforcement, and introduction of adaptive in-vehicle speed limiters. Further research is needed on the impacts of speed on accidents, pollution and costs to road users as well as on the monetary valuation of these impacts. Standardisation of procedures used in collection and reporting of speed data is needed to facilitate international comparisons.
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| 2. |
- Kallberg, Veli-Pekka, et al.
(författare)
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Recommendations for Speed Management on European Roads
- 1999
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Ingår i: Transportation Research Board Annual Proceeding.
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Tidskriftsartikel (refereegranskat)abstract
- Results of a recent European research project MAnaging Speeds of Traffic on European Roads (MASTER) are presented. Speed management is described as a two-step process where target speeds for different kinds of roads are determined first, and then various measures and tools are applied in order to adopt such speed. Current practice and main problems in speed management are described. The various impacts of speed and the factors affecting drivers’ choice of speed as well as the various speed management measures and tools are discussed. Basic principles of rational speed management are outlined on these grounds. Finally, recommendations for further development of speed management and research needs are formulated. It is recommended that target speeds on different kinds of roads are determined on the basis of systematic and comprehensive assessment of all impacts of speed. The recommendations concerning speed management measures and tools include, for example, harmonisation of speed limits in different European countries, development of European guidelines for urban speed management, further development and wider use of automated speed enforcement, and introduction of adaptive in-vehicle speed limiters. Further research is needed on the impacts of speed on accidents, pollution and costs to road users as well as on the monetary valuation of these impacts. Standardisation of procedures used in collection and reporting of speed data is needed to facilitate international comparisons.
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| 3. |
- Kallberg, Veli-Pekka, et al.
(författare)
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Recommendations for Speed Management Strategies and Policies.
- 1998
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The aim of the project MASTER (MAnaging Speeds of Traffic on European Roads) was to produce information that can be cited in the preparation of national and EU decisions concerning speed management and speed control equipment standards. For this purpose, the project looked for answers to three key questions: 1)What are acceptable ranges of speeds? 2)What are the key factors influencing drivers’ choice of speed? 3)What are the best speed management tools and strategies? The results of the project are documented in 26 reports: 12 deliverables and 14 working papers. The objective of the this report is to present recommendations for speed management strategies and policies. Recommendations for Speed Management Measures, Tools and Policy 1.Speed limits on roads of similar classification in different European countries should be harmonised so that road users’ expectations are consistent with respect to correct choice of speed irrespective of previous driving experiences in their home country. These speed limits should reflect the socially desirable speeds determined for example with the help of the MASTER framework. 2.European guidelines are needed for application of speed management measures and tools on residential and main roads in urban areas and on rural mixed-traffic roads. This would promote consistent and cost-effective speed management both on urban roads, where a wider range of potential alternatives is available and on rural roads where the possibilities for using low-cost physical measures are more limited. 3.Preparations for the introduction of compulsory adaptive speed limiters should be started. Adaptive speed limiters automatically prevent speeding by adjusting speeds according to the prevailing speed limit. The first step could be large scale field experiments in urban areas in different countries. Urban roads are the best choice for the first application because on such roads their public acceptability is highest and potential negative effects e.g. in the form of behavioural adaptation are smallest. 4.Redesign of European roads according to the principles of self-explaining roads should include hierarchical categorisation into a limited number of categories so that each level has a distinct set of characteristics that is clearly different from that of other levels. A reduced and simplified road hierarchy would promote the correct choice of speed for each road type and have other positive effects on road safety by assisting correct anticipation of behaviour of other road users. 5.Automated speed enforcement should be developed further and taken into wider use. In some countries legislative changes are needed so that the owner of the vehicle can be held responsible for speeding offences. In addition, a common standard could be developed for identification of vehicles by an electronic device. Speeding vehicles are currently identified from photographs which often requires laborious manual work. Electronic identification devices could be used also for collection of parking fees and road tolls. Furthermore, equipment that is currently used only for traffic monitoring could be used for enforcement purposes (e.g. induction loops and data transfer equipment). 6.The difference between the effects of speed on social costs and on private costs should be reduced, for example by internalising external costs (e.g. accident costs and environmental costs). This would encourage drivers to choose speeds that are preferable not only from their private standpoint but also from society’s point of view. 7.Information and publicity campaigns regarding the impacts of speed are needed, with the purpose of giving neutral and objective information about all impacts of speed, with due attention to the difference between private and social costs. Such information could increase the public acceptance of speed restrictions that are justified from society’s viewpoint, but decision-makers will still need to recognise that popularity is not necessarily a good criterion for speed management policies. 8.The highest possible speed of vehicles should be limited to the highest speed limit on motorways and speed limits on motorways should be harmonised across Europe.
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| 4. |
- Kallberg, Veli-Pekka, et al.
(författare)
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Strategies and tools for speed management on European roads.
- 1998
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Konferensbidrag (refereegranskat)abstract
- The aim of the European project MASTER (MAnaging Speeds of Traffic on European Roads) is to produce information that can be cited in the preparation of national and EU decisions concerning speed management and standards for speed control equipment. For this purpose, the project seeks answers to three key questions:1) What are acceptable ranges of speeds?2) What are the key factors influencing drivers’ choice of speed?3) What are the best speed management tools and strategies?Each of three research areas addresses one of these questions. Area 1 is concerned with developing a basis for appraisal of effects of different levels of speed upon accident occurrence, emissions, noise, vehicle operating costs and travel time. Area 2 provides information on factors that influence drivers speed behaviour with respect to present speed levels and speed management methods in Europe, enforcement levels, motivation and acceptability of driving speeds, and road design and subjective road categorisation. Area 3 reviews various tools for speed management, tests the most promising ones and gives recommendations for implementation of Advanced Transport Telematics (ATT) systems. The summary reports from these three work areas provide the main inputs to this paper, which is concerned with making recommendations for speed management strategies and policies. The full results of the project are documented in 26 reports which are listed in the reference section of this paper.
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| 5. |
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| 6. |
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| 7. |
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| 8. |
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| 9. |
- Varhelyi, Andras, et al.
(författare)
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Surrogate safety measures and traffic conflict observations.
- 2018. - first
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Ingår i: How to analyse accident causation? : A handbook with focus on vulnerable road users - A handbook with focus on vulnerable road users. - 9789089130648 ; , s. 95-128
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Bokkapitel (refereegranskat)abstract
- The chapter primarily focuses on observing traffic conflicts (also known as near-accidents) as a site-based road safety analysis technique. Traffic conflicts are a type of surrogate safety measure. The term surrogate indicates that non-accident-based indicators are used to assess VRU safety instead ofthe more traditional approach focusing on accidents (see chapter 2). The theory underpinning surrogate safety measures is briefly described, followed by a discussion on the characteristics of the traffic conflict technique. Next, guidelines for conducting traffic conflict observations using trained human observers or video cameras are presented. Chapter 4 concludes with examples of the use of the traffic conflict technique in road safety studies focusing on VRUs.
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| 10. |
- Vet, Jasper M., et al.
(författare)
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The first integrated speed management program benefitting vulnerable road users in Bangladesh : results and implications for LMICS
- 2016
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Konferensbidrag (refereegranskat)abstract
- Over 20,000 people are killed due to road traffic crashes in Bangladesh annually. The country has over 100 road traffic deaths per 10,000 motor vehicles, one of the highest rates in the world. 70% of crash fatalities occur in rural areas. In 2014, Safe Crossings (Netherlands) and CIPRB (Bangladesh) received permission from the government of Bangladesh to design and implement an integrated speed management program to prevent road traffic injuries at three locations on a national highway that passes through villages. The study goal was to understand and quantify the improvement in road safety as a result of small-scale infrastructural adaptations combined with active community involvement and road user education. We had a specific interest in the effects on VRUs. Prior to installing the interventions, the three intervention locations combined had, on average, per year: 110 serious accidents, 12 deaths, and 240 injured people. Pedestrians accounted for 63% of all fatalities in the Before Period. In an ideal world one would like to use accident statistics as the ultimate measure of road safety. In reality, this was not possible as the accident statistics were neither sufficiently accurate nor complete. Hence we had to design an alternative monitoring & evaluation approach. The basic research design is a Before and After study using three methods: i) speed measurement (also in control locations), ii) an accident recording system using local record keepers that we set up ourselves, and iii) conflict observation using the DOCTOR method with video recording. Implementation of all infrastructural interventions was completed in April 2015. The integrated speed management for three locations in Bangladesh has resulted a reduction in road traffic injuries and fatalities of around 60%. The net speed effect is a reduction on average of 13,3 km/h (or 20% in relative terms), suggesting a reduction in the number of people killed of 59% using Nilsson’s power law. Our accident recording system shows a 66% reduction in the number of serious accidents (significant at p < 0.01), a 73% reduction in the number of injured people (significant at p < 0.01), and a 67% reduction in the number of road traffic deaths (significant at p < 0.10).Analysis of the conflict data revealed a 54% reduction in relative terms (52% reduction when taking the traffic volumes into account) in the number of serious conflicts. In addition, no conflicts of the highest severity category occurred in the after period. An additional advantage of the integrated speed management program is that it can be implemented relatively quickly (in 6 to 12 months) and the cost-effectiveness is very high. Our calculation suggests a ‘cost per DALY saved’ of below USD 100. We would like to suggest three specific areas of future research based on this study: i) traffic calming in city environments in LMICs, ii) interventions to further reduce the speed of fast-moving traffic in general and buses in particular and iii) investigating the potential of an integrated speed management program in a large number of locations in LMICs with the joint aim of significantly improving road safety and generating valuable road safety data on (cost-) effectiveness and implementation challenges and solutions.
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