All four intersections have traffic lights. Only the turn from 7th to M has a dedicated left turn signal, but it comes at the end of the green for going straight. The one caveat is this is a corner of the new Marriot hotel that is being built for the convention center, so for the past year or so there has been a flagman at the intersection to stop traffic when required to let the trucks serving the construction site enter and leave the site. However, waze takes me through this intersection daily and does not usually send me around the block. The route is usually straight across L and left on 9th. So I'm fairly certain that the historic data shows that it is faster to make the left from L to 9th. Thus, I find it interesting that when I called up the route at home, waze routed around this block 50 minutes into the route. It seems to me that this means that waze has detected a real time slowdown for the turn or for that segment of L and is applying that real time data to the route even though I won't reach the segment for at least 50 minutes.
Regional Coordinator: Mid-Atlantic, US
Verizon, Nexus 6, Android 6.0.1, Waze 22.214.171.124