Global Automotive Light Bars Market Assessment, By Product Type [LED Light Bars, OLED Light Bars], By Vehicle Type [Passenger Vehicles, Heavy Commercial Vehicles, Light Commercial Vehicles], By Pattern [Spot Beam Pattern, Flood Beam Pattern, Combination Beam Pattern], By Application [Front Installation, Rear Installation, Side Installation, Inside Installation], By Technology [Halogen, LED], By Power Rating [Below 100W, 101-200W, 201-300W, Above 300W] By Region, Opportunities and Forecast, 2017-2031F