On the surface, ultraviolet light breaks down chemical bonds releasing free cyanide that is extremely toxic to fish. Phosphorus, found in rust inhibitors, stimulates growth of undesirable aquatic plants and algae in fresh-water lakes. Highway Runoff Highway runoff contributes to degradation of surface waters exposed to direct discharges from point or non-point sources and to contaminants in the air. Ground waters are gradually contaminated due to runoff percolation downward through soils. The most common contaminants are heavy metals, inorganic salts, aromatic hydrocarbons, and suspended solids that accumulate on pavements as a result of regular highway operation and maintenance activities, such as salting and sanding.
Weather is a key factor in air pollution exceedences.
These include measures such as carpool programs, alternative work-hour programs, parking management, and road pricing. As information technologies and advances in electronics continue to revolutionize all aspects of our modern-day world, from our homes and offices to our schools and even our recreation, they are also being applied to our transportation network. These technologies include the latest in computers, electronics, communications and safety systems. ITS can be applied to our vast transportation infrastructure of highways, streets, and bridges, as well as to a growing number of vehicles, including cars, buses, trucks, and trains. The information and communication technologies can also be used to better manage and improve how transportation providers governments, transit agencies, truckers, etc. offer services to the public.