1. Aguilar, S. R., Merino, J. L. M., Sánchez, A. M., & Valdivieso, Á. S. (2015). Variation of the heartbeat and activity as an indicator of drowsiness at the wheel using a smartwatch. International Journal of Artificial Intelligence and Interactive Multimedia 3.
2. Andreone, L., Amditis, A., Deregibus, E., & Damiani, S. (2005). Beyond context-awareness: Driver-vehicle-environment adaptivity. From the COMUNICAR Project to the AIDE concept. In 16th IFAC World.
3. Australian Bureau of Statistics. (2016). Motor Vehicle Census, Australia. Australian Government. http://www.abs.gov.au/AUSSTATS/abs@.nsf/mf/9309.0 .
4. Average Age of Light Vehicles in the U.S. Rises Slightly in 2015 to 11.5 years, IHS Reports|IHS Online Newsroom. http://press.ihs.com/press-release/automotive/average-age-light-vehicles-us-rises-slightly-2015-115-years-ihs-reports .
5. AT&T: Smartphone Use While Driving Grows Beyond Texting. (2015). http://about.att.com/story/smartphone_use_while_driving_grows_beyond_texting.html .