W. K. Lis
Superstar
Would it appease your nitpicking if I reworded it to "The horizontal bars aren't being used for any vehicle traffic on the roads, so it doesn't really matter that they aren't in the Handbook"? Because, really, you should have been able work out what I was meaning by that synecdoche. That vertical baron the traffic lights is for traffic in the lanes of the road governed by that traffic signal. The tram signals are not for vehicles on the roads so it doesn't matter whether they are vertical and horizontal bars, the Elder Futhark, or Sumerian cuneiform, and not knowing what they mean does not impact the driver's ability to operate their vehicle in a safe manner. They don;t need to be in the Drivers Handbook.
But they can be used by transit buses. Though in the rest of the world they wouldn't use it as Toronto uses it.
For buses, they use transit priority. For streetcars, no.