Cook, Sharon Quigley, Claire Tait, Richard Quality of vision - a review of the needs of drivers and riders. Final report. Quality of vision - a review of the needs of drivers and riders. Final report. vision;field of view;motorcyclist vision;visor use;visor evaluation;windscreens;windscreen evaluation;windscreen cleanliness;Design Practice and Management not elsewhere classified 2005-10-18
    https://repository.lboro.ac.uk/articles/report/Quality_of_vision_-_a_review_of_the_needs_of_drivers_and_riders_Final_report_/9353804