According to the Irish Examiner, the Road Safety Authority is going to request that the law be changed to mandate the use of headlights when driving in daytime. That's great, but don't they think it would be a good idea to convince people to use their headlights at night before they start worrying about daytime? I can't tell you how often I see/walk out in front of some guy - and it's nearly always men, often taxi drivers - driving at night with nothing other than the sidelights on. Does anyone ever get ticketed for driving without lights on?
Next, how about lights on when it's a dark, rainy, winter day. Lights on when the wipers are on is an excellent suggestion. After that we can talk about always on headlights.