Red signals are typically used to signify danger in a range of situations including train travel. Red signals must be clearly identified as different from yellow as the potential consequences of misjudging signal colour has serious safety consequences. A study by Professor Joanne Wood, School of Optometry and Vision Science at QUT, et al confirmed that small amounts of optical defocus, such as those experienced when looking through the intermediate corridor of progressive lens or with sub-optimal refractive correction, can cause such colour-misconceptions.
This project aims to conduct an experimental evaluation to further evaluate whether prescription spectacles with progressive lenses might alter the perception of signal colours and also whether selected spectacles lens tints might also have an effect on signal colour perception. Data collection will include site visits and specialised laboratory-based testing to address this question and provide recommendations on how to mitigate the risk of colour misconceptions caused by prescription lenses.
Funding / Grants
- Australasian Centre for Rail Innovation (2018 - 2019)