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Messages posté(e)s par peekay

    Échangeur Autoroute des laurentides

    dans Projets oubliés et/ou en suspens

    Posté(e)

    L'autoroute métropolitaine va-t-elle garder ses 3 voies en direction Est, comme avant les travaux, ou, tel qu'indiqué dans la publication de WestAut, va-t-elle être amputée d'une voie pour diminuer au nombre de deux?

     

    [ATTACH=CONFIG]5006[/ATTACH]

     

    Aucune ideé. Mais la fin des travaux est prévu pour octobre. Peut-etre ce n'est pas encore fini malgré l'ouverture de la nouvelle sortie à droite.

    STM : Nouveaux abribus

    dans Projets oubliés et/ou en suspens

    Posté(e) · Modifié par peekay
    insérer le lien

    Par Jean-François Villeneuve | Agence QMI

     

     

    Les nouveaux abribus montréalais arriveront bientôt, a confirmé lundi la Société de transports de Montréal (STM).

     

    Présentés en 2010, les trois prototypes testés à différents endroits de la métropole feront leur arrivée officielle l'année prochaine. Plus de 400 abribus modernes seront installés au cours des cinq prochaines années sur les trottoirs montréalais.

     

    «Le remplacement des abribus existants ne se fera pas tout de suite, a averti Marianne Rouette, de la STM. On en ajoute 400 au parc actuel puisque plusieurs de ceux existants sont encore en bon état.»

     

    Outre l'état des abribus existants, le remplacement du matériel tiendra compte du niveau d'achalandage, le niveau de service et l'intégration urbaine, a fait savoir la STM. C'est l'arrondissement de Ville-Marie qui sera le premier concerné.

     

    Modernes

     

    Issus d'un concours organisé par Design Montréal, ces abribus ont été élaborés par le consortium Leblanc Turcotte Spooner. Ils seront notamment équipés de bancs, de supports publicitaires et d'un système d'alimentation solaire pour l'éclairage.

     

    Un nouveau type de panneau signalétique avait aussi été présenté à l'époque, mais il avait été finalement rejeté. «Il ne faisait pas partie du projet, a expliqué Mme Rouette. Il ne répondait pas à nos besoins et nos critères.»

     

    Selon elle, «il n'y a pas d'autre projet de panneau» et la STM «se concentre sur les abribus» pour l'instant.

     

    Le nom du fabricant est toujours inconnu, puisqu'aucun contrat n'a encore été signé.

     

    Les abribus coûteront entre 13 000 $ à 15 000 $ chacun, ce qui n'est pas plus élevé que les installations actuelles.

     

    Des citoyens croisés près de l'abribus prototype situé en face du Complexe Guy-Favreau se sont dits heureux d'apprendre que 400 nouveaux modules devraient être installés. «Celui-ci me convient parfaitement, a dit Marie-Andrée M. Il n'y en a pas quand je pars avec mon fils le matin, alors de nouveaux, oui, sans hésitation.»

     

    Même réponse du côté de Mireille Yameogo, qui trouve cette nouvelle génération d'abribus est «meilleure que l'autre.»

     

    Très déçu. Complètement stupide comme décision. Encore plus sa réponse bien préparée. Voyons-Donc!

    Ca été rejeté car il coutera trop cher connasse!

    Anyway, Ca va dire que le projet de GPS est abandonné??? Comment afficher les prochains autobus sans panneau? La magie peut-etre? :thumbsdown:

     

    http://tvanouvelles.ca/lcn/infos/regional/montreal/archives/2012/08/20120814-074418.html

    Autoroute - Pont de la 25 (2011)

    dans Complétés

    Posté(e)

    Sure thing peekay. In all sincerity, I understand your skepticism. I was highly skeptic about induced demand at first too... it seems incredibly counter-intuitive at first. It's only when I took a course in transportation modelling, started looking at examples around the world and crunching some numbers myself that I realized how powerful this often misunderstood phenomenon is.

     

    According to Concession A25, the A-25 bridge has exceeded its average projections and is now topping 40,000 vpd on some days, and it's rising. New transponders are flying off the shelves like hot cakes.

     

    "Le dernier, explique-t-il à La Presse, a été enregistré la veille, 17 mai: 40 894 automobilistes ont passé le pont.

    Source: http://www.lapresse.ca/actualites/regional/montreal/201205/23/01-4527793-pont-de-la25-un-anniversaire-un-record-un-recours.php

     

     

     

    Before I get into this, let me define "trip". In transportation science, a "trip" is not grabbing your car keys and going to Quebec City for the weekend. A trip is more basic than that, and is simply defined as transportation from an origin to a destination.

    If I leave my home and go to work, that's a trip. If I walk to the depanneur, that's a trip.

     

    Changes to a network can affect traffic volume in a number of ways.

    When a new link is created, several things happen:

     

    1. People that would have previously foregone trips are now choosing to make those trips.

    Example: It's saturday night, there is no nightlife in my area, I feel like grabbing a beer somewhere with some friends, but there's too much traffic congestion and I don't feel like negotiating all that, so I'll just stay home or go watch the game at a friend's place nearby. However, now that a fast and efficient road allows me to go to where the the bars and clubs are, I'll choose to go out instead of stay home. I'm generating a new trip that would have otherwise not been made, and I'm doing this solely on the premise that a deterrent (congestion) is now removed from my utility function.

     

    Obviously, some people will still go out anyway, even if there is congestion, and some people will choose to stay home, no matter how efficient the roads are. But a certain percentage of users, who were "on the fence", will now start to make those trips.

     

    2. Destinations will be change. Example: Suppose there's a local cinema I go to because it's close to me. There's a much nicer cinema with better selection but it's 30 minutes away. Adding a lane to the highway that takes me there allows the travel time to be reduced to 15 minutes. I'll now be tempted to go to that cinema instead of the local one. So I'll drive farther to go to the fancy cinema, but in doing so I'll contribute to the increase in volume along that highway.

     

    3. Development will be spurred. New housing, offices and industries tends to pop up along highways, especially at exits and interchanges. Here is a classic example in the Montreal area: http://goo.gl/maps/0h0nb It doesn't take much to see how highways have shaped sprawl across the Montreal CMA. When new development appears along a highway, new trips will be generated. Buyers and developpers tend to make decisions based on induction and inference, and they rarely stop to consider future prospects for a transportation network.

     

    Here's an example: Imagine two new lanes are added to a highway passing through a undevelopped stretch of land within an urban agglomeration. Let's even throw in a new exit or two for good measure. Developpers will be attracted to the land because it will provide their customers with quick and easy access to the highway network. Today, we know that performance increases along urban highways tend to last for 5 years maximum, on average. So for those 5 years following a highway widening, performance will be fast, and new houses will be built. Folks will buy up those houses and start living there. Development will occur for as long as performance of the road network is adequate. Here's the problem though. Let's say the highway widening added 20,000 vpd of capacity, and let's say 8,000 new residents move into the area over those 5 years. According to the 2008 Montreal OD Survey, on average those category of residents will use the highway on average several times per day, but let's be generous and assume only 2 trips will be made per person. That's 16,000 vpd of new usage -- from the new sprawl alone. Now when you consider the other factors I mentioned, plus toss in the other land uses, like commerical (say, a new Dix30-style mall) and industrial (some development lining the highway, as we so often see) our timid 16,000 vpd estimate easily ramps up to 40,000 vpd and beyond. What you end up with is even more congestion than you initially had, because people were "fooled" into thinking the new and improved highway would last like that forever. In reality, it's gone in 5 years or less.

     

    In the early years, many deniers tried to pick apart research findings and look for mistakes. Even today, many deniers will often cite the UC Berkeley study from 1973-1990 which found that a 1% increase in capacity was met with a 0.9% increase in volume in under 5 years. They claim that the study didn't use enough data and therefore it's all wrong. Deniers often act like this is the only study we've ever done. The problem is, hundreds of new studies have been performed since then, with extremely reliable data using advanced techniques and the most cutting-edge computer software. With every passing year, the already-enormous mountain of evidence grows further still. To deny induced demand today, with everything that we've learned, is like denying that humans ever set foot on the moon.

     

     

     

    You're absolutely right in thinking it'll be 10% or less. Honestly, the figure will probably be somewhere around 1-4%. I threw around an extremely generous 10-20% hypothetical to show that even if we condeded such a large reduction, it still wouldn't matter.

     

    And yes, you're correct in stating that many things can and will affect transportation models.

    Classic road engineers, such as the ones we have at the MTQ, tend to look at very static models that don't take much into account. It's been like this for decades.

    Urban transportation experts have been leading the revolution with integrated approaches that DO take into consideration all the factors you just listed, and many more.

    The reason why most projections are poorly done and are way off the mark is because it takes an incredible amount of time and money to produce accurate figures.

    You need to do precise traffic enumeration, you need rich disaggregate data (such as the data found in the Montreal OD Survey), you need good utility functions, you need all the socioeconomic data and trend forecasting info you can get your hands on, and that's just the tip of the iceberg. You have to create a statistically reliable model that correctly balances all these variables. It is a mountain of work, let me tell you. Traffic engineers operating on a meager budget can't and won't do all that.

    Often their numbers are merely linear extrapolations, concocted in less than a day. I'm not joking.

     

    In the end, even the most precise models crafted by teams of urban transportation experts over the course of 5 years with budgets of millions of dollars... won't be 100% accurate. You can never be 100% accurate. But I can guarantee you those models and projections are more accurate than the crap we get from the MTQ.

     

    The moral of the story here is that everything we've learned over the last 60 years points to one conclusion: You can't build your way out of congestion, and even if you could, the side-effects would significantly outweigh any of the benefits. It's like trying to fight an ant infestation in your kitchen by leaving a bunch of food in your living room in the hopes of luring them away. In the end, you'll just end up with ants in your kitchen AND your living room. It's pointless.

     

    The only viable solution is to densify, invest in transit, and reduce our automobile dependence. I'm not saying tear down all the highways (although some of them will need to go, eventually) all I'm saying is stop aggravating the problem by building new ones.

     

    We need some cars and some amount of road infrastructure, but we're way passed just "some". We're in "way too much" territory.. The balance is tiltd 80-20 in the wrong direction, and we have a lot of work to do to try and bring it back to a sensible, sustainable equillibrium. The amazing thing is, we could stand to significantly bolster our economy too. On average, every dollar of transit spending more than doubles the economic output of a dollar spent on roads. Every dollar of transit spending generates more jobs too, because transit improvements are more labor-intensive (whereas road improvements are more material intensive.) This means more dollars in people's pockets, which means more spending and a stronger economy. Highways cost a lot to repair and maintain, and they generate sprawl which is highly inefficient and wasteful infrastructure-wise. The list goes on and on...

     

    The evidence points to an undeniably resounding conclusion: our society is too auto-centric and auto-dependent, and we could stand to gain tremendously by moving towards a healthier transportation mix. Unfortunately, car culture is so ingrained in our brains that we get defensive whenever somebody takes up an inch away from cars. From the time we're infants, playing with toy cars, to the the time we're 16 and told that getting a car is a rite of passage, to all the cars we see on TV, in movies and song lyrics... we're just inundated with cars. It's easy to see why people get defensive and irrational. It's one hell of an uphill battle, let me tell you... but we'll get there. Change has already begun, and it will only accelerate.

     

    Thanks for the reply. very interesting. I was quickly dismissing 40,000 vpd as actual new vehicles not new trips.:duh:

    However, surely these trips came from people who no longer take the PIE-IX bridge? I mean, what is there to do in that part of Laval? There's nothing in that area. I'm pretty sure that people who take the A-25 bridge must be ex-users of the other bridges, no?

    I would really love to see the numbers. Do they exist? Does the MTQ even look at that? I highly doubt it.

     

    I remember this following scene, it reminds me of your views and what the majority of people in North America believe in.

     

    In the 1992 movie Singles, Steve (played by Campbell Scott) has a grand vision of a "supertrain" for Seattle — it will cut down on traffic and be good for the environment. He explains the idea to his friend, who nods in approval, then hesitantly replies, "But I love my car."

     

    Steve eventually gets a meeting with the mayor, where he explains the great benefits of the supertrain. The mayor is silent for a moment, then says, "People love their cars." The supertrain dream is dead.

    Autoroute 30 - Discussion générale

    dans Infrastructures

    Posté(e)

    ...

     

     

    I don't have a problem with what you are saying, my issue is that I would very much like to see the facts. I am very curious to see the outcome of the A-25 bridge and the new A-30 in a few years time.

     

    So not only has A-25 not reduced congestion on the existing bridges to Laval...

    Where did you get this information? I'd like to see before and after figures please.

     

    That's 40,000 new car trips that are being generated that were not previously.

    I don't understand your point. Where did all these people come from?

     

    Traffic on some on-island highways such as A-40 will be reduced by as much as 10-20% in the first year or so

     

    I actually think it'll be less. I'm guessing 10% absolute maximum. Then again, I would love to see the before and after figures.

     

    Also, there are a lot of elements that can skew any simulation model:

     

    -A true green belt being established to avoid urban sprawl

    -Population boom / bust

    -Economic meltdown

    -Oil shortage

    -New highway extensions

    -New bus/train/metro routes

     

    Simulation software are incapable of predicting any of the above, but ultimately at least one of the items listed above will very likely happen within the next 8-10 years.

     

    You can introduce different scenarios in the software which would reduce or increase traffic but I can also do that off the top of my head. Either way, NONE is an exact science.

     

    Come back in 10 years with exact figures that prove your theory and I'll buy you a beer.;)

    Univers Condos - 25, 45 étages (2013)

    dans Projets Annulés

    Posté(e)

    POS est un façon de décrire ma déception. Déçu qu'un autre terrain de prestige (entrée de la ville bâtard!) est en train de se faire développer par des gens qui n'ont pas aucune sens de design, d'intégration, ni de volonté de faire quelque chose de bon pour notre ville. Un gros zero dans tout les sens.

     

    Ah oui, pour les gens qui crois que je ne regarde que les nombres d'etages. C'est faux, totalement faux. Le nouveau mariott U/C est de loin mon gratte-ciel préféré des dernières 10 ans à cause de son impacte sur R-L et elle est moins de 150 metres!

     

    Ce projet ne devrait pas être construit la. Je ne comprends pas les architectes montréalais de notre generation!!!:thumbsdown:

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