LEDs offer significant savings to transportation departments. According to the research of BBM led traffic ligts ,a 69W incandescent bulb is replaced by an LED version that dissipates only 11W – an 84% savings. Early on, LED signal heads cost two or three times more that the traditional incandescent heads. Today the premium is in the 60 to 80% range. But the LED signal heads last ten times longer so the savings are substantial when you add up energy cost, the cost of the signal heads, and the labor required replacing failed signal heads.
Colorado, meanwhile has satisfactorily deployed the aforementioned Snow Scoop Tunnel Visor. McCain VP of Manufacturing Greg Johnson describes the visor "like an air scoop on a hot rod." According to Johnson, the Snow Scoop design utilizes the same force – wind – that causes the problem in the first place. It's wind that blows snow into the visor. Johnson stated, "With snow there is usually wind and we figured that we could use a louver to allow the wind to clear the snow from the visor." The scoop in the design extends upward at an angle from the cylindrical visor and drives wind through a louver slot underneath the scoop on the top of the visor. The cylindrical visor also has a lengthwise slot at the bottom of the design that allows the snow to fall out.