Originally Posted by MasterSolenoid
It is confusing because it could be interpreted two different ways.
If I had to make a bet/fight in Court, I'd say: Cars, NEVER …. Buses, 7:00 AM to 10:00 AM
It should be shown as:
NO LEFT TURN
------------------------------------
EXCEPT SCHOOL BUSES
7:00 AM TO 10:00 AM
Just adding a simple 'line' may help define better.
There is a line, it's implied between the two different, separate signs.
The first sign that is standard and used frequently, "No left turn" Plain and simple-no ambiguities-everyone with a license should know exactly what it means.
The second sign while less common is still perfectly clear. Busses have an exception to the above restriction between certain hours, likely due to student pickup.