> This is the right method of handling such height limits, the only one that is guaranteed to be foolproof. Near where I grew up, there was a low bridge. At on

> This is the right method of handling such height limits, the only one that is guaranteed to be foolproof. Near where I grew up, there was a low bridge. At one point many years ago, an excavator on a low-loader hit the bridge, causing the excavator arm to swing around... into the upper deck of a loaded bus travelling in the opposite direction. The point is, this method might be foolproof in terms of preventing damage to the bridge, but it has other potential drawbacks.