for cyclists and drivers

As I cycled through Andover center this morning an electronic sign caught my eye. One line at a time, repeating, sending this message:

bicycles? cars? same road same rules

I wonder if the people who need a reminder that bicycles belong on the road, that both bicycles and cars are considered vehicles, and that both are governed by the vehicle code in all 50 states even realize this sign is meant for them. I find it disconcerting that I have seen both drivers and cyclists ignore the rules of the road; sometimes I'd like to reach out and shake them!