That's odd, you had no problem responding unsolicited to my comment.
In any event, you could be right.
And let me clarify so you can see it from a different angle.
Regardless of vehicle, often during pursuits just like this one, the suspect will actually "signal" when changing lanes, even though they're snaking through traffic at 90mph in an attempt to evade 7 cop cars...While yet others will obey all the rules of the road including the speed limit with a conga line of cop cars behind them. So when I hear someone "signaling" when being pursued by cops, I take it a bit more literal. I hope this helps with any confusion or further issues you might have.
I suppose it's a weakness of mine that I have an urge to defend folks whom I feel have been unfairly attacked. I'm trying to work on it.