NHTSA wants to change its vehicle safety standards for lighting to reduce the problem of glare from some daytime running lamps (DRLs). The agency proposes a three-step approach. First, it would require that DRLs based on upper beam headlights be reduced in intensity by more than half in newly manufactured vehicles beginning one year after the final rule. A year later, lower beam DRLs on new vehicles would be limited to about half the currently-permitted intensity. Three years after that DRLs on all new autos would be limited to about one-quarter of the intensity of today's brightest DRLs. Phone NHTSA's Tim Hurd at (202) 366-9550.
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
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