@article{kaber_jin_zahabi_pankok_2016, title={The effect of driver cognitive abilities and distractions on situation awareness and performance under hazard conditions}, volume={42}, ISSN={["1873-5517"]}, DOI={10.1016/j.trf.2016.07.014}, abstractNote={The objective of this study was to investigate the role of cognitive abilities in driver situation awareness (SA) and performance. Sixteen participants drove a high-fidelity driving simulator and experienced a hazard condition (a vehicle turning into their lane). In general, exposure to the hazard resulted in a subsequent increase in driver SA in follow-on driving. Working memory and visual-cognitive skills appeared to be critical to supporting driver SA after hazard exposure. Findings indicated that tactical driving tasks place greater demands on cognitive abilities and levels of SA for successful performance, as compared to operational and strategic tasks. Correlations among measures of driver cognitive ability, SA and performance provide a basis for future development of a relational model of the roles of cognition and SA in driving.}, journal={TRANSPORTATION RESEARCH PART F-TRAFFIC PSYCHOLOGY AND BEHAVIOUR}, author={Kaber, David and Jin, Sangeun and Zahabi, Maryam and Pankok, Carl, Jr.}, year={2016}, month={Oct}, pages={177–194} } @article{kaber_zhang_jin_mosaly_garner_2012, title={Effects of hazard exposure and roadway complexity on young and older driver situation awareness and performance}, volume={15}, ISSN={["1873-5517"]}, DOI={10.1016/j.trf.2012.06.002}, abstractNote={Few previous studies of driver situation awareness (SA) have focused on behavior in hazard negotiation. The objective of this research was to assess the effect of hazard exposure on driver SA and interactions with age and roadway complexity. Ten young (18–25 yrs) and ten older (65–81 yrs) participants drove in a simulator under two levels of environment complexity (simple – rural vs. complex – city) with two types of hazard exposure (static vs. dynamic). Situation awareness was measured using real-time probes posed by a confederate passenger. Driving performance was assessed in terms of lane maintenance and speed control. Results revealed hazards to cause degradations in high level of driver SA and speed control or to trigger adaptation, and vulnerability to hazard type was dependent on driver age. Older drivers exhibited greater speed reduction in response to dynamic hazards; whereas, young driver maintained higher speed, as compared to normal driving, when confronted with static hazards. In addition, increased roadway environment complexity compounded decrements in performance caused by hazard exposure. These findings are applicable to modeling driver behavior and SA under hazardous conditions and may support the design of new in-vehicle assistive technologies for hazard avoidance.}, number={5}, journal={TRANSPORTATION RESEARCH PART F-TRAFFIC PSYCHOLOGY AND BEHAVIOUR}, author={Kaber, David and Zhang, Yu and Jin, Sangeun and Mosaly, Prithima and Garner, Megan}, year={2012}, month={Sep}, pages={600–611} } @article{jin_mcculloch_mirka_2009, title={Biomechanical evaluation of postures assumed when harvesting from bush crops}, volume={39}, ISSN={["1872-8219"]}, DOI={10.1016/j.ergon.2008.07.005}, abstractNote={The objectives of this research were to explore the changes in the low back biomechanical responses during a harvesting task as a function of different harvesting techniques/postures and to explore the effects of an ergonomic intervention designed to reduce the low back stress during this work activity. Nine participants performed a series of simulated harvesting activities in a laboratory setting using four different harvesting techniques: full kneeling posture, squatting posture, stooping posture and kneeling on a knee support device (the intervention). As they performed these tasks the activity of muscles of the torso and thighs was captured using electromyography and trunk kinematics were captured using the lumbar motion monitor and a magnetic field-based motion tracking system. The results showed that (1) three postures – knee support, squatting, and stooping – required high flexion of low back (more than 60°) and (2) squatting and stooping postures showed significantly higher passive tissue moment compared with two kneeling postures. The results also indicate that the beneficial aspects of the knee support intervention appear to be outweighed by reduced productivity and the high degree of trunk flexion and that the current strategy used by these workers of alternating between the various harvesting postures may be the best strategy available. Understanding how changes in harvesting technique affect lumbar biomechanics can help ergonomists design effective interventions for the prevention of back injury in farm workers.}, number={2}, journal={INTERNATIONAL JOURNAL OF INDUSTRIAL ERGONOMICS}, author={Jin, Sangeun and McCulloch, Ryan and Mirka, Gary A.}, year={2009}, month={Mar}, pages={347–352} }