This is the EXACT same absurd UX issue for public transit buses making stops. And even more absurd? It's illegal (in Ontario at least) to not yield to the turn signal. The issue is that with an obscured curb-side light, you can't tell when a the road-side light goes from 'stopped' to 're-entering traffic lane'. I have no idea why we can't add additional informational signalling to these special-case vehicles.