when not driving, truck drivers need to idle their engines to maintain climate control within the truck cab (interior), as well as provide electricity for appliances. engine idling is inefficient and only adds to the problem of air pollution. this unnecessary idling can be remedied with shore power (which is a term and idea borrowed from the shipping industry), or truck stop electrification. when ships are docked in a port, they connect to a land-based power supply to provide electricity and eliminate the need to idle their engines. the idea of shore power was transferred to the trucking industry, and now there are companies such as idleaire and shorepower which provide electricity to diesel trucks, which eliminates the need for the driver to idle the engine. idleaire also provides access to the internet, cable television, and land line phone services. idleaire promises to eliminate one-eighth of nitrogen oxide pollution through "electrified parking", however, particulate pollution may increase in those areas where the electricity is provided by coal burning power plants. some drivers are also experimenting with hydrogen fuel cells, which provide clean and silent power for appliances when trucks are not running.