I need some tips on increasing my daytime and dusk visibility. Lately it's like I'm wearing Harry Potter's Cloak of Invisibility even though I wear bright clothe and run (some fairly standard) lights during the daytime. I also start and end my commute by taking my kids to preschool in a trailer, and would like to make the trailer more visible from the sides as it gets darker in the morning and late afternoon.

So, what do you recommend? A helmet light? A reflective vest? Better head and tail lights? (Please be specific if you have light recommendations.) What about the trailer? Any good ideas for lighting the sides, or running lights up the flagpole somehow?