What if it was a convertible truck??
Sydney tunnel water screen stop sign for oversized vehicles [video]
21–30 of 206 posts
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#22Nice blog spam. A youtube video with no article.
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#23Earlier quoted context omitted.
It's a really cool idea, but I couldn't help but think they should move the water stop sign to well BEFORE the million dollar damage point I thought the stop sign was only visible because of the dark background (i.e. moderately lit tunnel) behind it? My first thought was similar - it needs to be seen sooner - but I presume that even some braking before slamming into concrete is better than none.
You mean, before the 3 flashing stop signs BEFORE he got to that point? A better idea might be a low bar that causes the truck damage well before they reach the tunnel. Only issue is how to make it safe and very obvious it's done the truck damage?
Depending on the truck, load, and barrier, that could be a hazard to other vehicles and occupants. Likely less so than the tunnel itself.
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#24You might think that trucks ignoring multiple, obvious flashing warning signs wouldn't be that common. This hilarious video proves otherwise:
http://gizmodo.com/5955244/watch-this-bridge-destroying-doze...
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#25ironically, the water on the road makes it that much more difficult to stop
ironically, physics would preclude an oversized truck from reaching the wet pavement.
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#26low-tech solution: http://vanishingpoint.at/wordpress/wp-content/uploads/2010/1... (edit: actual image url instead of article)
If you hit that sign chances are you'll rip it down and drop it on the car behind you, as can be seen happening in the video in the linked article.
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#27Earlier quoted context omitted.
It's a really cool idea, but I couldn't help but think they should move the water stop sign to well BEFORE the million dollar damage point I thought the stop sign was only visible because of the dark background (i.e. moderately lit tunnel) behind it? My first thought was similar - it needs to be seen sooner - but I presume that even some braking before slamming into concrete is better than none.
You mean, before the 3 flashing stop signs BEFORE he got to that point? A better idea might be a low bar that causes the truck damage well before they reach the tunnel. Only issue is how to make it safe and very obvious it's done the truck damage?
Many places in Europe have a bar with chains, the chains hang off the bar at the height of the upcoming tunnel / bridge. Does of course assume that the driver will hear the chains knocking about on his truck...
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#28It was cool seeing it in action (I wonder who thought of it, and got passed the bureaucracy to make it happen). I wonder whether they considered industry standard truck height when building that tunnel.
Overheight vehicles are 4.3m and over in New South Wales, and this tunnel is signposted at 4.4m (and probably has a bit of leeway).
Trucker often have to deal with road limits: they are expected to know the size of their vehicle and pick an appropriate route. And if they don't, they are expected to read the signs along the route that indicate road limits ahead.
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#29It's a really cool idea, but I couldn't help but think they should move the water stop sign to well BEFORE the million dollar damage point. Some big trucks would have a hard time seeing the stop sign, reacting to it, slamming on the brakes, and coming to a complete stop in time before they cause damage to the overhang and beams.
The advantage with the signs before the final water sign is that they should be enough for any reasonably alert driver and don't make the environment more hazardous. You really want to have the water screen projection, which douses the road with water, as the last line of defence. Water on the road is likely to make it far more difficult to stop a large truck like that. Having it earlier could actually be detrimental…
I worked near a train bridge that was constantly being hit by trucks. It was a near weekly event at times. They installed big, flashing lights and drivers would still blow through.
Re: Sydney tunnel water screen stop sign for oversized vehicles [video]
#30Earlier quoted context omitted.
You mean, before the 3 flashing stop signs BEFORE he got to that point? A better idea might be a low bar that causes the truck damage well before they reach the tunnel. Only issue is how to make it safe and very obvious it's done the truck damage?
The problem with a barrier that is hit is that you need to make sure it is structurally sound before you allow any other traffic past it. And if it leaves debris on the road, that needs to be cleaned up too. It's already a slow process to back out the oversized truck, so you don't want countermeasures that make it even slower.
I wonder if a clearly labeled "all trucks go into this lane" well before the tunnel would work. You could have your barrier there, and not impede the rest of the traffic. You could even divert trucks into the car lanes while you clean up.
One one hand, they're already ignoring signs. On the other hand, a sign that says "ALL TRUCKS go this way" might get a better, or at least different, response from "YOU are too tall".