Shaped lenses on Quebec traffic signals 

These are actually superior because they're easier for colour-blind people to read. That's their raison-d'etre.

Between the US / Canada border crossing at Armstrong PQ and St Georges de la Beauce, the first traffic signal along route PQ 173 is in Saint-Côme-Linière. The first time I visited in July 2016, there were signals with the square red lights. When I returned in August 2021, the red and yellow lights were round. Protected turns had the green lights flashing, but were steady for permitted turns (yield to oncoming traffic) I think the square red lights still remain in Wendat, northwest of downtown Quebec City.

That very last intersection is so confusing. You are making a left turn, but the green arrow directly in front of you is not for your lane. Oh no. You have to look to the left outside your lane. It’s crazy. It makes it look like people are stopped in the middle of the street on a green light. The USA’s system is simpler and more straightforward than this.

The red squares can be seen reflecting on the bus's windows as it makes its turn :-D - 06:35

I have not seen them before !

Wow amazing video

These are actually meant for colorblind people to recognize them