Earlier quoted context omitted.
What does "you can make unprotected left turns" mean? I'm from the UK so I guess this is the US equivalent of turning right at a set of traffic lights... but what significance does "unprotected" have?
I think it means without the green turn arrow that indicates oncoming traffic has a red light. I've never heard this term before, though.
I will occasionally abuse the term with the term "protected right", to mean waiting at a red light where the cross traffic moving leftwards has a protected left. (because the cross traffic's left is protected, the only conflict with a right-turn-on-red is someone in the cross traffic U-turning.)