I've done some more reading on the issue. It looks like municipalities in Ontario can be liable for damages if they don't maintain roads up to certain minimum standards, as established in Ontario Regulation 612/06.
Safety issues addressed in the Minimum Maintenance Standards include:
- ice on roadways;
- snow accumulation;
- monitoring of weather conditions and weather-related hazards;
- the frequency of patrols to “check up†on roadway conditions;
- shoulder drop-offs;
- cracks;
- potholes;
- roadway debris;
- street and highway lights;
- signage (including regulatory and warning signs);
- traffic signals;
- conditions of bridges and overpasses;
- roadway surface conditions and quality; and
- sidewalk conditions.
Source: https://www.preszlerlaw.com/blog/toront ... ent-claim/
I've gone ahead and looked up the minimum standards for warning signs:
Regulatory or warning signs 12. (1) The standard for the frequency of inspecting regulatory signs or warning signs to check to see that they meet the retro-reflectivity requirements of the Ontario Traffic Manual is once per calendar year, with each inspection taking place not more than 16 months from the previous inspection. O. Reg. 22/10, s. 8; O. Reg. 46/13, s. 12 (1); O. Reg. 367/18, s. 13.
(1.1) A regulatory sign or warning sign that has been inspected in accordance with subsection (1) is deemed to be in a state of repair with respect to the retro-reflectivity requirements of the Ontario Traffic Manual until the next inspection in accordance with that subsection, provided that the City does not acquire actual knowledge that the sign has ceased to meet these requirements. O. Reg. 46/13, s. 12 (2).
(2) If a regulatory sign or warning sign is illegible, improperly oriented, obscured or missing, the standard is to repair or replace the sign within the time set out in the Table to this section after becoming aware of the fact. O. Reg. 22/10, s. 8; O. Reg. 367/18, s. 13.
Source: posting.php?mode=reply&f=47&t=8403#preview
The issue here is that the incorrect signage was an orange "temporary condition" sign. It was not a regulatory (white background) or warning (yellow background) sign. So unless there is case law to the contrary, it looks like the City would not have been financially liable.
The other question I have is whether not I could have been convicted of an HTA violation. Obviously, if I ended up in the right lane and collided in the bus, my unsafe lane change would have been the cause of that collision. But if it came to trial, would a judge accept the defence that I should not be convicted with making an unsafe lane change because the posted signage was incorrect?