Road verges are often buzzing with pollinators. If they are rarely mowed, or even consist of sown flowers, they provide food for bees, butterflies and others. But living by a road has its disadvantages. One of them is a risk of being hit by car when crossing the road. I don’t know whether costs or benefits of flowering road verges for pollinators prevail, the review I read on the topic was inconclusive. Anyway, I would not sow flowers on the highway median strip.
Non-honey bees 