On 2016\05\06 10:15, Mike Bristow wrote:
In article ,
wrote:
As always: https://www.youtube.com/watch?v=Dk9DjO-_rT8
Cool! Now, why don't Network Rail try that?
It is cool. Does it work during daylight hours? Wouldn't just a
simple traffic light work as well?
A sulphuric acid curtain would work better.
Seriously, surely the point of these crashes is that the bloke thinks
that even though the sign/detector/water curtain thinks that he's too
high for the bridge/tunnel, he thinks that he'll squeeze through with
half an inch to spare, and a lot of the time he'll be right. So no
matter how visible you make the sign, the crash will still happen. The
only way to stop them is to detect the height of vehicles and then lower
a physical gate so that the driver knows that even if he could
theoretically squeeze under the bridge, he can't get past the gate. Or
put up an electronic toll sign that tells drivers that vehicle LLxxLLL
will be fined the cost of a bridge strike even if they manage to squeeze
through.