Most of the countries require motor vehicles to have DRL lights on during all daytime—these countries include: France, Canada, Denmark, Finland, Hungary, Iceland, Holland, Norway, and Sweden etc. Studies have proven that daytime running lights use is associated with small to moderate reductions in multiple-vehicle daytime accidents, specifically
those involving vehicles approaching from the front side i.e. oncoming traffic.
Countries like USA having set ban on the HID kits and Bearing Suppliers from China are worries for its export to USA and many other European countries having ban on it. Studies have witnessed that use of HID xenon kits make oncoming traffic blind because of more glare produced by HID xenon lamps.
Most of the studies have been conducted in countries located at latitudes that are to the north of most of the continental USA and that have longer twilight periods and usually lower lighting.
This concern has been expressed frequently that daytime running lights may drop their performance in countries located at lower latitudes, such as the USA because the lights will provide less of a contrast as compare to the sun light reflecting or while facing the sunlight.
The costs of producing daytime running lights are very low, so even unassuming crash reductions would be cost effective as compare to spending lower value on Daytime running lights.