As someone who drives in the fog more than I might wish, I have wondered why there is not an equivalent rear daytime running light. I guess some might worry about confusion with brake lights, but if the rear DRLs were yellow, for example, that would still help and not be confusing. I have too often run up on a car in the fog even at considerably reduced speed. – Stan in Yarmouth, N.S.
Good idea! Many European countries, especially those in Scandinavia, require rear fog lights. Vehicles use a switch and brighter tail light on the outside of the vehicle to help to see them when approaching from behind.
There are a myriad of federal regulations in Canada and the United States covering this issue. To date our American neighbours do not require even front daytime running lights so getting them to have both would be a problem.
While on the topic, I'd like for Canadian regulations to require that DRLs be separate from instrument panel lighting so we would not have motorists running around at night without taillights.
They think they are on because they see a glow in front of the vehicle and the instrument panel is lit up. But there are no taillights.
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