Abstract: Systems and methods of detecting fatigue and drowsy conditions of vehicle drivers without initially using any disruptive visual and sound alarms, and instead immediately interacting with the driver as to their condition and providing information on rest stops through onboard GPS (global positioning satellite) systems, as well as alerting acquaintances and friends of the driver through telephones such as a cellular phone. The systems and methods can interact with the driver through touch type screens, and/or audible feedback to alert the driver of their condition and to temporarily take the driver off the roads.

Abstract: A pigmentary material comprises silver in a lattice of crystalline zirconia, which material contains at least 0.4% by weight of the silver. A process for preparing a pigmentary material comprising silver in a lattice of crystalline zirconia comprises calcining a zirconium component which yields the zirconia, and a silver component which yields the silver, forming a calcination mixture of the resultant zirconium and silver moieties and cooling the mixture, the weight of fluoride compound in the total weight of the components to be calcined being less than 6%.