I realize that 50-E is undergoing major construction, but some of the changes around the right exit to Fort Myer/Queen Street have made for dangerous conditions. There is a median at that exit (on the left when you're taking the exit, on the right when you're continuing down 50-E) that isn't marked at all, so at night it is hard to see. I take that exit regularly and narrowly miss running up on the curb all the time! It would be helpful if they could paint the median bright yellow or add some reflectors. Or both!