According to foreign media reports on February 1, the US Department of Energy released the latest LED lighting survey study table for the McHartough Roosevelt Expressway for two years. The study shows that although LED lighting has a lower life expectancy than high-pressure sodium lamps, the actual return process is lengthy. Test data shows that LED lighting saves 26-57% of energy compared to high-pressure sodium lighting. However, the initial investment cost is high, and the general return period for test lamps is 8-16 years. Strip Curtain Led Display,Led Transparent Display,Led Screen Transparent,Transparent Led Display Screen ShenZhen Megagem Tech Co.,Ltd , https://www.megleddisplay.com
In 2009, the US Department of Transportation selected LED lighting from four companies to conduct an installation test survey on the Roosevelt Expressway. After two years of survey data, although the highest output lumen of the high-pressure sodium lamp can reach 1,003lm, and the output lumen of the LED lamp is only between 6296-8181lm, the test shows that the beam control of the LED lamp is better. 