Totally agree that the key test here is adequacy,
More images to consider:
https://imgur.com/a/ZuiBX7dLooking again at the approach signage, I’d argue the 2t weight limit fails the adequacy test for several reasons:
- It’s small, non-standalone, and buried among over 12 regulatory signs on a cluttered board. There’s no visual emphasis (compared to the bold 2.0m restrictions that dominate the layout)
- There’s no duplication of the 2t sign for drivers in the left-hand lane. In real traffic, it’s obscured by taller vehicles or queueing traffic.
- Driver attention is already maxed out. Between the overhead gantry, height panels, boom barriers, speed limit signs, average speed camera warnings, and diverging lanes, it becomes impossible to spot and interpret the weight restriction in time to take action.
- The actual tunnel entrance is well beyond the initial signage and barrier. The “restrictions ahead” board appears at the narrowing. But once you’ve passed the barrier system, you’re fully committed, with no physical or legal way to turn around.
The 2.0m height restriction is repeated on the archway above the tunnel. But there’s no repetition of the 2t weight limit at the tunnel entrance — where the actual restriction would logically apply.
Can I reasonably argue that the sign clutter board is advisory only, and not a valid placement of a mandatory regulatory sign, as required under TSRGD Direction 8 and LATOR Regulation 18?