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A transportation engineer has a simple solution to potholes: pave better roads

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Re: A transportation engineer has a simple solution to potholes: pave better roads

#51

This strikes me as a classic separation of buyer interests from vendor interests leading to misaligned incentives. The contractors have no incentive to update their equipment. In fact if this is scientifically proven to be a major solution they should want to avoid this. If the province could incentivize the vendor to pay them more for every year there is no pothole and punish them for every pothole they would totall…

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Re: A transportation engineer has a simple solution to potholes: pave better roads

#52

This strikes me as a classic separation of buyer interests from vendor interests leading to misaligned incentives. The contractors have no incentive to update their equipment. In fact if this is scientifically proven to be a major solution they should want to avoid this. If the province could incentivize the vendor to pay them more for every year there is no pothole and punish them for every pothole they would totall…

Project Gutenberg has a copy of the Victorian-era (The Municipal and Sanitary Engineer's Handbook)[http://www.gutenberg.org/ebooks/55935]. There's a good discussion on how to write a paving contract on about page 35, including a quick discussion of using machinery to crush rocks for the road surface. It turns out that different machines produce wildly better or worse crushed stone, and that it makes a difference.

And there's a snarky comment on page 163 about companies that have to fix roads after ripping them up ("breaking"): if they do condescend to cart anything away it is generally the metal, which they think will come in nicely for the repairs of the trench during their liability for such repairs.

TL/DR: your town engineer just needs to specify the right stuff in the contract, and the road paving companies will just have to adapt.

If you think about it, the same thing holds true for any large, bespoke contract. What you get at the end depends in part on the supervision you put in.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#53

I've always wondered why we still have such crappy roads, given that roads are possibly the oldest technology there is, and every civilized place on earth has paved roads, thus making an enormous potential market for a better solution. Either: 1) Most people don't care as much as I do about the bone-jarring, car-ruining potholes that are ubiquitous in every cold climate on earth, and thus aren't willing to spend thei…

> 2) Engineering a better road is simply too hard of an engineering problem, so what we have is the best we can do at the moment. Or equivalently, any better roads we do know how to make are too cost-prohibitive. This is essentially the case. Asphalt roads as they exist today are basically a really good compromise of all the variables you care about in a road. They are farely durable, are easy to repair, can be laid…

> relatively cheap

This is a surprisingly big factor: we get bitumen from refining crude oil whether we want it or not, and the endless demand for the lighter fractions of crude means we're gonna do a lot of refining regardless, so the market had to find something to do with the left-over sludge.

Also pushing the price down, asphalt is almost completely recyclable: when a worn-out road surface finally gets dug up & replaced, the old asphalt doesn't go to landfill - it can be crushed up, melted down, and re-layed somewhere else. So much of the demand doesn't actually much reduce the amount on the market.

Compare to, say, concrete: we don't make concrete unless we want concrete, it's not a byproduct of an otherwise-useful process; and once you dig it up, you can only re-use it as ugly gravel, you can't turn it back into fresh concrete.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#54

This strikes me as a classic separation of buyer interests from vendor interests leading to misaligned incentives. The contractors have no incentive to update their equipment. In fact if this is scientifically proven to be a major solution they should want to avoid this. If the province could incentivize the vendor to pay them more for every year there is no pothole and punish them for every pothole they would totall…

Or, the town engineer can simply add it in to the contracts. An example from the Project Gutenberg copy of [The Municipal and Sanitary Engineer's Handbook]( http://www.gutenberg.org/files/55935/55935-h/55935-h.htm#Pag... ), page 35, there's a considerable discussion of how to specify a road paving contract. And later on page 57 or thereabouts there's talk about specifying the machinery needed to break the stones for…

This is a dupe FYI.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#55
post #54

Earlier quoted context omitted.

Or, the town engineer can simply add it in to the contracts. An example from the Project Gutenberg copy of [The Municipal and Sanitary Engineer's Handbook]( http://www.gutenberg.org/files/55935/55935-h/55935-h.htm#Pag... ), page 35, there's a considerable discussion of how to specify a road paving contract. And later on page 57 or thereabouts there's talk about specifying the machinery needed to break the stones for…

This is a dupe FYI.

Thanks. My browser was acting up. Dups should be removed, and the one good comment saved.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#56
post #12

I've always wondered why we still have such crappy roads, given that roads are possibly the oldest technology there is, and every civilized place on earth has paved roads, thus making an enormous potential market for a better solution. Either: 1) Most people don't care as much as I do about the bone-jarring, car-ruining potholes that are ubiquitous in every cold climate on earth, and thus aren't willing to spend thei…

Well... We have been engineering better roads. Compared to brick or packed earth, asphalt is high tech. New materials and mixes are researched and tried. Some recent roads seem to have lighter finish than traditional blacktop. You are right though, it is a cost vs durability issue.

This, by far. I can't tell you how many times I've had to listen to my significant other (a roadway engineer) talk about new types of asphalt designed to reduce noise pollution, last longer, or fulfil some sort of edge-case requirement.

Surprisingly, for as bad as roadway construction is in the states (and it's absolutely awful), the US apparently leads the rest of the world in the study of roadway materials.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#57
post #16

I've always wondered why we still have such crappy roads, given that roads are possibly the oldest technology there is, and every civilized place on earth has paved roads, thus making an enormous potential market for a better solution. Either: 1) Most people don't care as much as I do about the bone-jarring, car-ruining potholes that are ubiquitous in every cold climate on earth, and thus aren't willing to spend thei…

Or (3) the paving companies are happy with planned obsolescence, and the deciding customers are politicians who will move on before the new roads go bad, and won't be criticized anyway for authorizing the same methods everyone else uses. No individual involved has a strong incentive to make things better. Unless, of course, constituents start making an issue of it with their local representatives :)

I don't get the impression that paving companies are around long enough (or have anywhere enough influence) to intentionally rig the system in this way. Infrastructure is absolutely neglected in the US and Canada - municipal and state/provincial governments try to get away with as being cheap as possible, and deferring as much maintenance as possible, and... well, you get what you pay for.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#58
post #36
post #27

Earlier quoted context omitted.

> South of south America, more or less equivalent to Florida Are you calling North America "America", and then go on and call Florida "south America", as if there isn't such a place in the world as South America? I do not approve of this North America-centric view of the world at all.

> Are you calling North America "America", and then go on and call Florida "south America", as if there isn't such a place in the world as South America? Depending on the geography class you took, and where, there might not be a "South America". Some countries just call the whole continent America: Most North Americans are taught that there are 7 continents: Asia, Africa, North America, South America, Antarctica, Eur…

As you are fully aware you are well within your rights to not approve. But if you call the whole continent America then surely its very southern part will not be Florida.

Re: A transportation engineer has a simple solution to potholes: pave better roads

#59
Reminds me of this section[2] from "How Engineers Create the World" by Bill Hammack - an interesting but perhaps scattered read.

  Well, a pothole is not just a technological thing, 
  it's also a political entity. Usually we think of 
  European nations as steeped in governmental regulation, 
  and the United States as a free market, but actually
  the opposite occurs in building roads. In the United States 
  the government sets specifications and asks contractors 
  to meet them. Once done with the road they have no 
  more responsibility.
  
  Contrast this to France where the contractors must come 
  up with their own specifications and guarantee their work. 
  This means that if a pothole developers the contractor has 
  to fix it. But in the united States, once the job is done, 
  as long as it has met specifications, the contractor is no 
  longer liable.
1. https://www.amazon.com/How-engineers-create-world-commentari...

2. https://i.redd.it/uthzdyul53fy.png

Re: A transportation engineer has a simple solution to potholes: pave better roads

#60
post #33
post #27

Earlier quoted context omitted.

> South of south America, more or less equivalent to Florida Are you calling North America "America", and then go on and call Florida "south America", as if there isn't such a place in the world as South America? I do not approve of this North America-centric view of the world at all.

America refers to The United States of America. Same as we don't refer to Mexico all the time as Estados Unidos Mexicanos. I don't approve of getting upset over turns of phrase online. Principle of charity.

>America refers to The United States of America.

Well, that might be true for people living in the US but, and I might be going out on a limb here, it might not be so true for others.

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