Lighting systems in an increasing number of applications are being converted from conventional lighting to light-emitting diodes (LEDs), and the public transportation sector is no exception. The advantages are evident. Thanks to the long service life of LEDs, maintenance and lamp replacement are only rarely necessary, keeping the associated costs at a very low level for budget-conscious municipal or regional rail transit systems as well as airlines. The flat dimensions of LEDs offer greater latitude in designing lumimares for small spaces and such long, narrow vehicles as subway cars, buses and airplanes, and these efficient light sources significantly reduce energy costs.
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