I have a car that came with yellow Halogen Fogs as standard in Japanese. In Kenya we use fog lights a lot at night because our roads are barely lit even in cities, barely painted and lots of obstacles from unmarked bumps including mountain ones to potholes.
I tried switching to LEDs (Philips Ultinon Extreme) but it appears when they light wider than Yellow Halogen Fogs such that I can see the end of unmarked roads, they are poor at illuminating the road directly Infront such that I only see obstacles at the very last minute without my full lights.
Visibility seems to be better after I switched back to standard halogen fogs. I am wondering if this is expected behaviour of the 2.