Ontario MTO Truck Knowledge Practice Test

Ontario clearance limits for underpasses are typically set at 4.15 metres. Option A is incorrect because 3.50 metres would not provide enough clearance for most commercial vehicles. Option B is incorrect because it is slightly lower than the standard clearance limit. Option D is too high, as 4.50 metres may be unnecessary and more costly to construct. Therefore, the best answer is C, which falls within the recommended range for clearance limits in Ontario.