From
dcstreetcar.com, at this
link:
Flashing Yellow Signal at Starburst
In February 2015, the District Department of Transportation (DDOT)
launched the first left-turn flashing yellow arrow in the District at the Starburst – the five-point intersection of H Street NE, Bladensburg Avenue NE, Benning Road NE, 15th Street NE and Maryland Avenue NE. The signal flashes a yellow arrow when vehicles are permitted to turn left from H Street NE onto Bladensburg Road NE and now replaces the traditional green signal at the intersection used to indicate the need for left-turning vehicles to yield to oncoming traffic and pedestrians.
The flashing signal enhances the safety and efficiency of the busy intersection and allows for safer operations of motorists and the DC Streetcar through the intersection.
The signal operates as follows:
All motorists should use caution when traveling through the intersection and follow all restrictions.
Of course, Ontario, or Toronto for that matter, cannot and will not use the above arrow signal lights as indicated here, because it makes sense.