Multimodal traffic safety concerns in a university population

Travelers have different concerns about traffic safety, which may affect their transportation choices and risk-taking behaviors as well as the overall safety performance of multimodal transportation systems. The objective of this study was to examine factors associated with stated concerns surrounding traffic safety among travelers using multiple transport modes. The analysis used data from an online questionnaire survey completed by over 2,000 students and employees at Utah State University in Logan, Utah, US. Four latent variables—concerns about pedestrians and cyclists, auto drivers, modal interactions, and roadway conditions—were confirmed using factor analysis from 16 questions about traffic safety concerns. These four types of safety concerns were then analyzed to understand their associations with mode choice, commuting behavior, and socio-demographics using a structural equation model. Results showed that safety concern varied systematically among different mode users and demographic groups. Auto drivers perceived interactions with pedestrians and cyclists as concerning, while non-auto users felt more concerned by automobile traffic. Commuters who were recently involved in a crash were especially concerned with non-motorized modes. Women, lower-income, and non-white road users were more concerned with traffic safety overall. Findings about multimodal traffic safety concerns provide insights into people’s perceptions, which can be useful in developing designs, plans, and policies for making a safer transportation system for all road users.     

How fast would you (or should you) drive here? Investigation of relationships between official speed limit,perceived speed limit,and preferred speed

Speed is a critical risk factor, which makes its management the central point of the Vision Zero approach. Driving speed is influenced by speed choice, and in turn by the perception of the road parameters, as well as by the characteristics of drivers. Credible speed limits and self-explaining roads have been suggested as promising countermeasures; however, these rather theoretical concepts have only rarely been operationalized and quantified.The aim of this study was to investigate the relationships between speed indicators (official speed limit, perceived speed limit, preferred speed), as well as their differences, and to determine which road and personality characteristics influence them. Compared to previous studies, we introduced several innovative features, including a richer personality dataset based on three different questionnaires, a focus on all three types of roads (urban, rural, transition), and representative data on observed speeds.Using statistical models of the speed indicators, we found that both speed limit belief and speed choice, as well as their differences, are often influenced by the same characteristics. These are mainly more generous road design (higher road class, higher speed limit, and wider road) and the presence of additional elements (vegetation, pavements, and pedestrian crossings). These characteristics may help improve the credibility of speed limits and self-explaining performance.     

Measuring optimism bias among military personnel

High numbers of young military personnel die due to road traffic collisions (RTCs). Yet, there is a paucity of research related to the contributing factors (i.e., optimism bias and willingness to take risks) associated with RTCs and the examination of road safety education program tailored at reducing young military fatalities. In order to address this gap in the literature, we examined one specific road safety educational intervention tailored for the UK military personnel and investigated their attitudes towards the program, optimism bias and willingness to take risks. Measures evaluating their optimism bias, willingness to take risks and attitudes towards the program were asked after the participants attended the road safety interventions. The results revealed that young military personnel, aged 18–25, had higher optimism bias and willingness to take risks compared to older military personnel, and that this effect diminishes with age. The results provide importance evidence related to military personnel’s attitudes to risk-taking.     

The effects of a job crafting intervention on the success of an organizational change effort in a blue-collar work environment

The current study in a blue-collar context investigates whether a job crafting intervention may facilitate employee adaptation to organizational change, while decreasing exhaustion and increasing positive attitudes towards change and safety behaviour. It was hypothesized that the intervention would increase job crafting behaviours (i.e., seeking resources, seeking challenges, and optimizing demands) resulting in decreased employee exhaustion, and improved change attitudes and employee safety behaviour (i.e., adherence to organization’s standard operating procedures). The quasi-experimental study revealed that, after the intervention (consisting of a workshop, four weeks of job crafting implementation, and an evaluative session), employees reported an increase in two of the three trained job crafting strategies (i.e., seeking challenges, optimizing demands). Moreover, those who participated in the intervention reported lower levels of exhaustion, improved cognitive and behavioural attitudes towards change, and increased safety behaviour. The intervention was found to improve the affective, cognitive, and behavioural components of a change attitude due to increases in seeking challenges. Results were similar after controlling for quality information and leadership behaviour during the change. It is concluded that a job crafting intervention and resulting job crafting behaviour can be an effective way to achieve successful adaptation to organizational change.     

Internal Forces During Static Prehension: Effects of Age and Grasp Configuration

The authors studied effects of healthy aging on 3 components of the internal force vector during static prehensile tasks. Young and older subjects held an instrumented handle using a 5-digit prismatic grasp under different digit configurations and external torques. Across digit configurations, older subjects showed larger internal normal (grip) and tangential (load-resisting) digit force components and larger internal moment of force. In contrast to earlier reports, safety margin values were not higher in the older subjects. The results show that the increased grip force in older persons is a specific example of a more general age-related problem reflected in the generation of large internal force vectors in prehensile tasks. It is possible that the higher internal forces increase the apparent stiffness of the hand+handle system and, hence, contribute to its stability. This strategy, however, may be maladaptive, energetically wasteful, and inefficient in ensuring safety of hand-held objects.     

Accomplishing Structural Change: Identifying Intermediate Indicators of Success

Coalitions are routinely employed across the United States as a method of mobilizing communities to improve local conditions that impact on citizens’ well-being. Success in achieving specific objectives for environmental or structural community change may not quickly translate into improved population outcomes in the community, posing a dilemma for coalitions that pursue changes that focus on altering community conditions. Considerable effort by communities to plan for and pursue structural change objectives, without evidence of logical and appropriate intermediate markers of success could lead to wasted effort. Yet, the current literature provides little guidance on how coalitions might select intermediate indicators of achievement to judge their progress and the utility of their effort. The current paper explores the strengths and weaknesses of various indicators of intermediate success in creating structural changes among a sample of 13 coalitions organized to prevent exposure to HIV among high-risk adolescents in their local communities.     

Adapting to Context in Community-Based Participatory Research: “Participatory Starting Points” in a Chinese Immigrant Worker Community

Community-based participatory research (CBPR) is increasingly being used to better understand and improve the health of diverse communities. A key strength of this research orientation is its adaptability to community contexts and characteristics. To date, however, few studies explicitly discuss adaptations made to CBPR principles and processes in response to community context and partners’ needs. Using data from our CBPR study, the San Francisco Chinatown Restaurant Worker Health and Safety Project, and drawing from literature on immigrant political incorporation, we examine the links between the contexts of the Chinese immigrant worker community, adaptations made by our collaborative, and study outcomes. In particular, we explore the concepts of contexts of reception and participatory starting points, which may be especially relevant for partnerships with immigrant communities whose members have historically had lower rates of civic and political participation in the US. We discuss contextual findings such as worker partner accounts of language barriers, economic and social marginalization, and civic skills and participation, as well as subsequent adaptations made by the partnership. We also describe the relative effectiveness of these adaptations in yielding equitable participation and building partners’ capacity. We conclude by sharing lessons learned and their implications for CBPR and partnerships with immigrant communities more broadly.     

Truth,Ramsification, and the Pluralist's Revenge

Functionalists about truth employ Ramsification to produce an implicit definition of the theoretical term true, but doing so requires determining that the theory introducing that term is itself true. A variety of putative dissolutions to this problem of epistemic circularity are shown to be unsatisfactory. One solution is offered on functionalists' behalf, though it has the upshot that they must tread on their anti-pluralist commitments.