General > General Technical Chat
How would you use electronics to solve the 11' 8" bridge problem
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Nusa:

--- Quote from: tooki on January 08, 2018, 04:17:38 pm ---
--- Quote from: Mr. Scram on January 08, 2018, 04:16:07 am ---It's funny, yet unsurprising how people insist on the reason being "stupid", while the statistics and psychology tell another story. Obviously, claiming moral superiority feels good, and people love pointing fingers and shake fists, but that doesn't mean it's right. It's a lesson aviation learnt a long time ago, but surprisingly hasn't quite trickled down to driving or the general public. You could put the death penalty on hitting that bridge and it's unlikely the numbers would be much different.

--- End quote ---
It’s simply not feasible to eliminate every hazard from everything everywhere. Regardless of whether you call it stupidity, obliviousness, distractedness, inattentiveness, or any of a gazillion psychological effects, at some point you have to draw the line of practicality and trust that most people will behave correctly.

Heck, even aviation, which has indeed eliminated tons of sources of mechanical and human failure, is now at the point where crashes are rare, but when they happen, they’re almost always human error now, despite checklists and procedures and simulator training.


--- Quote from: Maxlor on January 08, 2018, 04:06:02 pm ---I think whoever is responsible for the bridge has sufficiently accounted for that. People drive on (mental) autopilot or while being distracted by stress all the time, but they still recognize traffic lights; they have have the notion of red->stop down unconsciously. So the traffic lights should suffice.

--- End quote ---
I seriously doubt any such consideration was given, because that bridge was built in 1940. I don’t think tall trucks were even an issue then.

--- End quote ---

There were some, but not as many. Plus the streets on either side are overpasses and passable to trucks. It probably wasn't much of an issue at all until whenever the city decided to make streets one-way for traffic flow, which moved traffic off the larger parallel street and eliminated it's overpass as an option because it became one-way in the other direction.
Red Squirrel:
Freaking laser beams man. Pew pew!  Before the bridge have two towers on both sides of the road with a laser that goes across set to a bit below the bridge clearance (to account for vehicle shocks/bounce and snow on the road), if the beam is crossed it then activates a huge warning to stop.  I like the waterfall idea.  But that requires water/pipes, which will freeze in winter.  So could maybe use smoke instead?  It does not need to be a screen just something that grabs your attention like some kind of high pressure smoke jets from the top of the bridge or even shooting from the sides.    Not sure what is the best way to create this smoke though, and also keep it safe.  Needs to be a chemical you can just store and that it can activate at a moment's notice.

Best bet might just be a huge flashing warning, if you're still ignoring it then you deserve to ruin your car.  :P   Idealy there should be some solid metal beams right before the bridge that are slightly lower, so you hit that and not the bridge, if you still end up going through.  All these vehicles hitting that bridge are probably damaging it over time.
tooki:

--- Quote from: Red Squirrel on January 09, 2018, 01:20:48 am ---Freaking laser beams man. Pew pew!  Before the bridge have two towers on both sides of the road with a laser that goes across set to a bit below the bridge clearance (to account for vehicle shocks/bounce and snow on the road), if the beam is crossed it then activates a huge warning to stop.  I like the waterfall idea.  But that requires water/pipes, which will freeze in winter.  So could maybe use smoke instead?  It does not need to be a screen just something that grabs your attention like some kind of high pressure smoke jets from the top of the bridge or even shooting from the sides.    Not sure what is the best way to create this smoke though, and also keep it safe.  Needs to be a chemical you can just store and that it can activate at a moment's notice.

Best bet might just be a huge flashing warning, if you're still ignoring it then you deserve to ruin your car.  :P   Idealy there should be some solid metal beams right before the bridge that are slightly lower, so you hit that and not the bridge, if you still end up going through.  All these vehicles hitting that bridge are probably damaging it over time.

--- End quote ---
Ummmmmm... they already use optical sensors (maybe lasers?) to check the height for 3 blocks in advance and light up a huge sign, and for years it’s had the solid steel beam to protect the bridge, which has been damaged in the past. I guess you didn’t read any of the thread, nor the FAQ I linked??
james_s:
Is there a good reason not to have a railroad crossing style gate that lowers across the road when an over-height truck approaches? It sounds like they already have the height sensors in place.
Red Squirrel:

--- Quote from: tooki on January 09, 2018, 01:27:23 am ---
--- Quote from: Red Squirrel on January 09, 2018, 01:20:48 am ---Freaking laser beams man. Pew pew!  Before the bridge have two towers on both sides of the road with a laser that goes across set to a bit below the bridge clearance (to account for vehicle shocks/bounce and snow on the road), if the beam is crossed it then activates a huge warning to stop.  I like the waterfall idea.  But that requires water/pipes, which will freeze in winter.  So could maybe use smoke instead?  It does not need to be a screen just something that grabs your attention like some kind of high pressure smoke jets from the top of the bridge or even shooting from the sides.    Not sure what is the best way to create this smoke though, and also keep it safe.  Needs to be a chemical you can just store and that it can activate at a moment's notice.

Best bet might just be a huge flashing warning, if you're still ignoring it then you deserve to ruin your car.  :P   Idealy there should be some solid metal beams right before the bridge that are slightly lower, so you hit that and not the bridge, if you still end up going through.  All these vehicles hitting that bridge are probably damaging it over time.

--- End quote ---
Ummmmmm... they already use optical sensors (maybe lasers?) to check the height for 3 blocks in advance and light up a huge sign, and for years it’s had the solid steel beam to protect the bridge, which has been damaged in the past. I guess you didn’t read any of the thread, nor the FAQ I linked??

--- End quote ---

I just skimmed the thread so messed that part. Looks like they did everything they could then, you can't stop stupidity.  Well you can, with a metal bar.  :-DD
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