Awareness Raising Spoke Cards Campaign Project?

-So I'm super motivated and pumped to work on a flyer.
-It is important.
-I don't believe it's doing too much at once to say both sides of the story. In fact I think that's pretty frickin' important. On top of that, I think it's pretty easy to do.
-While of course it'd be great to live in the land of no lorries, that is not my intention here. Nor is it my intention to only blame HGV's. My intention would be to make it clear that cyclists need to ride safe and HGV's need to drive safe. If you talk about either side independently you risk losing at least 50% of the people involved in the situation and chances are not much will improve.
-HGV drivers are easy to find...they are the ones in the big trucks, so no worries there. I don't think the gruffalo or myself nor any like minded individual would have problems finding them.
-I also support something a bit more direct action as well.
-I will also help with Ghost Bikes, I think they are incredibly poignant.

Why would you want to diffuse the strength of one 'single minded' message by trying to speak to different audiences with different, albeit related, messages?

Why not have different pieces of communication aimed specifically at different audiences (i.e. one for cyclists, one for HGV drivers/hauliers) but with the umbrella 'theme' of BikeSafeLondon or whatever it happens to be. So, the website for example becomes our central hub or strapline in a way (like if Carling developed a lager specifically for women, they wouldn't use the same sort of tone they've developed for their current male audience but they'd be missing a trick not to use their 'If Carling did...' strapline - different audiences, different approach, from the same source).

Sorry but what 'I think' you're suggesting in terms of strategy i.e. blasting both groups with double info, one piece of info for one group and one piece for the other but all wrapped up in the same flyer/card/ad/whatever, totally goes against what I've learned over the last 15 years in marketing, communications and strategy.