Specific symbols are among the various smart-highway projects, in one case giant snowflakes, which appear on the road when the temperature falls below freezing and the surface potentially becomes slippery, thus warning drivers to adjust accordingly. Better yet, the markings are charged by sunlight during the day!
The special paint could also be used for road markings, such as priority lane dividers, which could be used to identify future dedicated electric-vehicle charging lanes. Other lighting uses include specific colors that indicate the speed of preceding vehicles.
The first leg of this experimental highway will be launched in the Netherlands by the end of 2013.
Source: Design to Improve Life