A paper titled “The impact of cognition-affecting neurological diseases on reaction time and driving speed deviation” authored by Athina Diamanti, Apostolos Ziakopoulos and George Yannis, has been published in Open Transportation Journal. Analysis of cognitive impairments based on GDS questions showed that frequent ‘feelings of boredom’ correlated with a 7% increase in reaction time and a 8% increase in the standard deviation of driving speed. Conversely, ‘feelings of worthlessness’ reduced the standard deviation of driving speed by 4.5%. Drivers with Alzheimer’s and Parkinson’s diseases showed higher reaction times, while drivers with depression and the control group showed lower reaction times. Drivers with Parkinson’s disease showed statistically fewer deviations of average speed. This research demonstrated that cognitively impaired individuals have larger reaction times and more erratic driving speeds.