The flashing yellow arrow has a very important purpose. It eliminates a danger called "yellow trap."
The change to flashing yellow arrow is necessary, because a circular green can not be shown when the straight ahead signal is red, and such a display is necessary to eliminate yellow trap.
The real problem is that Indiana uses a flashing yellow arrow in conflict with the federal standard, where the driver using it has the right of way.
Troubleshooter November 1, 2010
at 10:35pm
The flashing yellow arrow has a very important purpose. It eliminates a danger called "yellow trap."
The change to flashing yellow arrow is necessary, because a circular green can not be shown when the straight ahead signal is red, and such a display is necessary to eliminate yellow trap.
The real problem is that Indiana uses a flashing yellow arrow in conflict with the federal standard, where the driver using it has the right of way.