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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

The impact of the school safety zone on passenger car equivalent values in Indonesian urban roads

Hidayati, Nurul January 2013 (has links)
In heterogeneous traffic analysis, traffic flow is measured by converting the values of different vehicle types using Passenger Car Equivalents (PCE) values. School Safety lone (ZOSS) facilities were provided by Indonesian Government to improve the safety of pedestrian by controlling the speed of vehicles near primary schools located around the main road. The effect of school locations around the main street is the presence of roadside activities such as pedestrians, private vehicles stopped, and bus stops. This condition will affect the traffic flow. The objectives of this research were to develop the model of PCE values for Indonesian urban roads equipped with ZOSS, and to determine how much the lOSS changes the PCE values. The surveys were conducted in 9 roads, in Surakarta, Sragen, and Y ogyakarta. Each road was divided into 4 loci corresponding to the locations of camcorder, i.e. Locus B (before), Locus l (at zebra crossing), Locus A (after) and Locus 0 (outsideZOSS area). Road segment was used to see the changes that might occur in 9 different locations, while locus was used on the same road but at certain point were equipped with a relevant facility of lOSS. This research has used the speed ratio method which expressed the ratio between the average speed of a vehicle type and the average speed of cars. This variable was combined with the percentage and a dimension ratio of each vehicle type, as well as with a measure of side friction. The recommended model was modified based on the Speed-Based Method referring to the Indonesian Highway Capacity Manual.

Drug control policy in Thailand : the shift more towards harm reduction

Waeladee, Sritakool January 2014 (has links)
Previous research has demonstrated that a long development of Thai drug policy along with crime control and immorality explained the dominance of a prohibition ideology in drug policy in the present day. None of the previous research has yet to address the significant change occurring recently with the adoption of harm reduction ideas to the Thai drug policy, 20 10/20 II. Hence, this research aims to be the first to provide novel insights into such important incident. This research has two key aims. The primary research aim is to gain better understand of the process of 'how' factors, such as, actors, policy ideas, networks, institutions and socio-economic forces interacted and possibly contributed to the recent change and 'why' under which conditions, despite entrenched prohibition ideology, the recent change of the drug policy still occurred. The secondary research aim is to test the applicability of the dominant US-based theories, particularly, the Policy Advocacy Coalition Framework (ACF) and the Punctuated Equilibrium Framework (PEF) to explain the recent change. Aligned with the pragmatists' worldview, this research is designed in a case study tradition using mixed methods by which theories are, possibly, both inductively developed and deductively tested. While qualitative methods are primarily used to achieve the primary aim, the quantitative method of social network analysis is embedded to suppol1 a systematic test of key network relational assumptions. This research provides novel knowledge on the process of the recent change in which institutions played the key roles. Institutions shaped the roles of key actors' behaviour, their networks/collective actions in relation to harm reduction advocacy at subsystems. Conflicting institutional values explained the conditions of the subsystem

A framework for road safety assessment : identification of temporal and spatial hotspots

Coll, Bronagh January 2016 (has links)
During the last decade, the concept of composite safety performance index (CSPI) has become a popular practice in the field of road safety, namely for the identification of worst performing areas or time slots also known as hotspots. The overall quality of a composite index depends upon the complexity of phenomena of interest as well as the relevance of the methodological approach used to aggregate the various indicators into a single composite index. However, current aggregation methods used to estimate CSPI suffer from various deficiencies at both the theoretical and operational level; these include the correlation and compensability between indicators, the weighting of the indicators as well as their high "degree of freedom" which enables one to readily manipulate them to produce desired outcomes. This research strives to minimise the aforementioned deficiencies of the current approaches through the introduction of a nonlinear aggregation approach for the estimation of a CSPI. The developed method can be summarised into two main steps: the introduction of mathematical definitions, which facilitate the pairwise comparison of indicators and the development of marginal and composite road safety performance functions. The method was applied for the assessment of both the temporal and spatial hotspots within Northern Ireland and Great Britain, facilitating a comprehensive benchmarking exercise. For temporal assessment, an additional analysis was carried out, using rates based on averaged hourly indicators. For the spatial assessment, two additional exposure indicators were incorporated into the model, namely the population density and the population, respectively. A comparative study was performed to assess the effectiveness of the proposed method over traditional weighting methods. Finally, cluster analysis and principal component analysis, have been used to investigate and highlight any hidden patterns associated with collisions that occurred in the most prevalent under-performing policing districts in Northern Ireland and Great Britain.

Causes and strategies to reduce road traffic accidents in Abu Dhabi

Hammoudi, Abdulla Al January 2014 (has links)
Every year globally 1.3 million people lose their lives from road traffic accidents (RTAs). To date, there has not been a comprehensive evaluation of RTAs in the United Arab Emirates, and the results from this study would help in evaluating the issues related to RTAs. Relevant literature on factors related to RTAs was reviewed to inform the methods adopted for the study. Structured questionnaires were used to collect quantitative data among 291 drivers and 280 pedestrians in Abu Dhabi, while 41 key informant interviews with traffic managers provided qualitative data. Draft recommendations on RTAs in Abu Dhabi that were derived from drivers, pedestrians and key informant interviews were discussed with appropriate stakeholders , traffic managers and policy makers in the country that resulted in the development of RTAs benchmark in the country. The study has identified major causes of RTAs in Abu Dhabi, with young people between 18-25 years, the ones who are likely to cause RTAs in Abu Dhabi. Not wearing seat belt, using mobile phone and alcohol consumption were also identified as causes of RTAs. Aggressive driving behaviour was the most unsafe driving behaviours and included speeding, tailgating, not using indicators and jumping red traffic lights. Using a mobile phones as a pedestrian while crossing roads and crossing roads from undesignated places also contributed to RTAs. The study has proposed methods to reduce RTAs in Abu Dhabi including traffic law enforcement, traffic campaigns and education traffic safety programs. The study further proposes that a welcome pack be provided for new arrivals to the country, with information on the importance of traffic safety and to explain the traffic law in the country as an appropriate method to reduce RTAs in Abu Dhabi. The study further proposes that governments should work with relevant stakeholders to address issues related to RTAs.

Statistical investigation and modelling of relationships between road accidents and social characteristics

Abdalla, Ibrahim Mohamed January 1997 (has links)
No description available.

Driven by WHO? : a quantitative content analysis of the Global Road Safety Partnership publications

Davies, Gareth Roger January 2012 (has links)
No description available.

Assessing driver behaviour due to in-car distractions

Williamson, Oscar W. January 2015 (has links)
In-car distractions have always been present in one form or another. There is no doubt that passenger conversations impaired drivers historically, and continue to do so; however, the new incarnations of low-cost microprocessor controlled nomadic and integrated equipment, compound upon, not replace those historic distractors. The consequence is that these highly distracting secondary tasks pervade and compete for drivers' finite resources, and thereby contribute to collisions that result in deaths and serious injuries for society to injure. To better understand the impact of distractions on the most impressionable driving cohort, an even gender-split of young (18-24) Northern Ireland residing drivers, were asked to participate with a laboratory based experiment, which was also complimented with an on-line survey. The Laboratory experiment was primarily based on the ISO 26022:2010 lane change test (LeT) and the prototype ISO 17488 detection response task (DRT); and data was collected for driver impairment (car control and selective attention) and driver workload (objective: Reali Rate Fluctuation, and subjective: NASA TLX). This study found that complex visual distractors impaired selective attention and car control, but the latter impairment was disproportionately extreme; whereas, complex auditory distractions also had a significant degree of selective attention impairment, but had a limited effect on car control; furthermore, the compounded interaction between distraction types was observed for the texting task, which required both physical and complex visual inputs, resulting in an impairment that was exaggerated by the influence of the complex visual distraction type. Therefore, the degree and manifestation of driver impairment, was directly relative to the distraction type and severity of the secondary task performed whilst driving, and the compounded impairment caused with secondary tasks with more than one sensory distraction type, was predominantly defined by the most influential component.

Mental models of eco-driving : the measurement and activation of drivers' knowledge and skills

Pampel, Sanna Mirja January 2015 (has links)
Eco-driving has the potential to reduce fuel consumption and therefore emissions considerably. Previous research suggests that drivers already possess a certain level of eco-driving capability, which they do not practise in their everyday lives. The studies reported in this thesis are based on a mental models approach, which enabled an in-depth exploration of eco-driving knowledge and skills and broadened the understanding of the underlying cognitive mechanisms. This thesis describes two driving simulator experiments aiming to measure, activate and ultimately interrupt eco-driving mental models in a variety of scenarios, relevant for safe and eco-driving. The studies used simple driving task instructions, text message interventions as well as a workload task. Changes in the participants’ behaviour and thoughts were analysed with a combination of quantitative and qualitative methods. The results suggest that drivers have mental models of eco-driving on several levels, ranging from knowledge and strategies to tactics in specific situations to automated behaviour. However, in the first experiment they did not use them when they were instructed to ‘Drive normally’. In the second study text message primes and advice provided over two weeks were not able to replicate the effect of experimental instructions given directly before driving. Behavioural changes following these instructions were abandoned when performing a workload task, and not resumed afterwards. Future research needs to consider alternative methods to prompt drivers to use their existing eco-driving knowledge and skills. Studies with a larger number of participants, and in real-world settings can then validate findings. It is suggested to expand the mental models approach into other fields such as sustainable transport in general.

An examination of the characteristics of young drivers in Northern Ireland and their involvement in road traffic collisions

Redpath, Gwyneth Margaret January 2016 (has links)
The aims and objectives of this thesis were to examine the reasons for the high proportion of collisions resulting in death or serious injuries, especially to young drivers on Northern Ireland roads by examining why they suffer more deaths and injuries than their proportion in the population. This was achieved by issuing and analysing a questionnaire based on one previously issued in GB; conducting a Naturalistic Driving experiment with a qualified, approved driving instructor and his pupils to study the use of an audible signal as a means of highlighting hazards; and desk research. Results showed that new drivers in Northern Ireland are not significantly different from those in GB and that an audible signal can be useful in slowing down drivers ahead of a hazard. It was concluded that traffic fatalities have reduced because of the depressed economy but are likely to rise as the economy improves and that the use of a pre-emptive/advanced warning or signal could be one means of enabling young driver road traffic fatalities to remain low, even as the economy improves and more younger drivers start driving on the roads.

Developing corporate knowledge and a BAA plc policy position on aircraft emissions and climate change

Noble, Emma Jayne January 2002 (has links)
The aviation sector is faced with a difficult sustainability challenge. It is one of the fastest growing global industries, with a projected growth rate of 5% a year and an important rote in the global economy yet it is believed to have a moderate but rising impact on the global climate through the emission of global warming gases into the atmosphere. Indeed air travel is now the worlds’ fastest growing source of climate change emissions. In response to this sustainability dilemma, this work based research initiative aims to take forward BAA plc's (formerly the British Airports Authority) sustainable development (SD) programme and develop a BAA policy position on aircraft emissions and climate change. The initiative intended to make an impact in two main areas; firstly in developing BAA's awareness and understanding of the issue of aircraft emissions and climate change and its relevance to the business and secondly in the development of a BAA policy position and action plan to address the issue. The work has resulted in a published policy position on aircraft emissions and climate change (Appendix 6.7) and a process which has served to increase the awareness and understanding of the issue within BAA (Chapter 4, 5, 6). An action plan designed to implement this strategy has also been developed (Appendix 7.1). The project also presents a model for sustainability policy development in BAA (Chapter 7) and serves to demonstrate the role of the work based researcher in a business and sustainability policy making setting (section 7.7) In Chapters seven and eight of the project summary, two sets of recommendations are presented; one aimed at BAA, considers how the business should take forward its SD programme, in relation to climate change (Section 7.8). The other is aimed at sustainability professionals embarking on similar policy development initiatives or change management roles in the private sector/ public sector (Chapter 8). In addition, the research prompted the company to question its understanding of SD and its environmental responsibilities as a leading airport business and that of its customers, the airlines. As a result the initiative assisted in widening the scope of BAA's SD programme and has encouraged the development of a number of other work streams, which are currently underway. These include the development of an internal leadership model for SD, a sectoral influencing strategy and a review of BAA's conceptual understanding of SD (Appendices 7.2, 7.4).

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