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It is a design decision to acknowledge pedestrians and facilitate their movement by building a sidewalk and then make that unsafe by designing for high speed traffic adjacent.

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The designer essentially admits the unsafe situation being created by installing a breakaway pole. Not legally defensible in any way whatsoever. It would take some care to find an appropriate test case. How can we even know that?

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For most crashes, the police take statements from drivers and witnesses and try to find someone at the scene who broke the law. Do you know of a study where all potential causes of a representative group of crashes was investigated? The no-sidewalk design probably would be cheaper and have a higher Level of Service. And then there is its corollary, designing a road that encourages a high traffic speed and then placing a much lower speed limit on it. People respond to cues and will drive in a corresponding manner. If the road looks like you can go and feels like you can go , people will go , even with a 35 MPH speed limit.

I know there is discussion and some examples of all reds at lighted intersections allowing peds free range. So in that respect slowing the cars on the street prior to turning could be an engineering issue. Is the right on red banned because sightlines are so poor that it causes too many collisions?

This type of wreck is not a frequent thing in the west despite it being allowed except at intersections that forbid it which I think is triggered by sightlines, high speeds of cross traffic or significant ped movement ,. I ma not following you. Why does the DOT install traffic signals to divide the time between cars but not between cars and pedestrians? I am baffled! How do you engineer to protect the vulnerable this situation? If it is a right or left hook then the only way to eventually prevent it is to outlaw the turn when people are crossing which of course then needs enforcement to make the behaviour stick.

If the system you propose were implemented, the pedestrian phase everywhere would be as brief as standards permit. A fully law-abiding pedestrian walking multiple blocks would have to wait at every intersection, aside from the small number that he or she reaches during the several-seconds-long walk phase. Furthermore, drivers would have no obligation to yield to the vast majority of pedestrians, who enter the crosswalk outside of the brief walk phase.

Only at the busiest left turn locations are specialized signal phases provided. The exact same law requires drivers to yield to pedestrians in crosswalks while turning. The problem is with drivers who break the law and with a law enforcement system too weak to encourage those drivers to obey the law.

CWE - CWE/SANS Top 25 Most Dangerous Software Errors

The solution is a fully protected left turn signal, where the turning lane has a red arrow during the time the pedestrians have the walk signs. So no conflict. Meanwhile the the thru traffic has a green. It has been very effective and seniors really like it. A recent study of 68 intersections in NYC. Green and red lights are not designed to be obeyed only when there is a lot of traffic, otherwise drivers would cross lightly trafficked intersections all the time…. Vision zero is all about engineering the roads to prevent mistakes… Not to push the problems down the line to enforcement, which we cannot afford.

Where the vast majority of our crashes involving people on foot or bike and people driving are right turns. Probably due to the one-way system in the city. The vulnerable users do not abide by the walk signal and get hit especially in limited or no light.


I saw, for the first time in years, a four way walk intersection the other day. It is a very dense, small environment with significant ped movement, large numbers of people driving wanting to turn and thankfully a very narrow roadway. I have been here many times but the signals were new. Because I pay attention to signal sequences and am involved with traffic safety—plus I was not in much of hurry—I sat back and watched it through a cycle.

The peds screwed it up for the turning autos because they just ignore the ped signals and walk regardless. Thus huge auto queues for several blocks. Interesting behaviour study. The Dot studies show the majority of pedestrian crashes with injuries being on the left turn, not right. Same for pedestrians: we need to focus first on protecting those who abide by the law but where the design of the intersection put them at risk.

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Here are some things to check for to ensure the equipment is designed and spaced to be safe:. Whether your kids play on a home or public playground, it's important for you to take a general look at the equipment to make sure that it is clean and well maintained. Check for objects like hardware, S-shaped hooks, bolts, and sharp or unfinished edges that stick out on equipment and could cut a child or cause clothing to become entangled.

All hardware on equipment should be secure, with no loose or broken parts. Plastic and wood should show no signs of weakening, and there should not be any splintered or rusted surfaces.

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If the local playground has a sandbox, check for hazardous debris such as sharp sticks or broken glass, and be sure that the sand is free of bugs. Sandboxes should be covered overnight to prevent contamination from animals, such as cats. Help keep your playground clean and safe by picking up trash, using the equipment properly, and reporting any problems to the city, town, or county parks department, school, or other organization that is responsible for the upkeep of the playground.

If a part seems broken, loose, or in need of other maintenance, designate it as off-limits immediately and report the problem to the appropriate authorities. Safe playground equipment and adult supervision are extremely important, but it's only half of the equation: Kids must know how to be safe and act responsibly at the playground. Because swings, slides, and climbing equipment are so different from one another, each requires a different set of safety considerations.

And some kinds of equipment are not safe for playgrounds, no matter how careful kids are. Swings are the most frequent source of childhood injuries from moving equipment on a playground. Because seesaw use requires cooperation between kids, they're generally not recommended for preschoolers unless the seesaw has a spring-centering device to prevent abrupt contact with the ground.

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  • Regardless of design, both seesaws and merry-go-rounds should be approached with caution. Climbing equipment comes in many shapes and sizes — including rock climbing walls, arches, and vertical and horizontal ladders. It's generally more challenging for kids than other kinds of playground equipment. Be sure your kids are aware of a safe way down in case they can't complete the climb. The low-end goes really deep and remains punchy, which makes it easy to comprehend the relationship between a kick drum and bass instruments.

    Designing Dangerously

    The upper bass and low-mids sit very well together, and reveal the solid foundation of a great-sounding mix in a very natural way. The upper mid-range is super transparent and vivid. Vocals and other centre-positioned instruments are portrayed in the most natural way. The mid-range is also very detailed towards the outer rims of the stereo panorama, sometimes generating the impression of added width to the sound stage.

    The high-end of the Convert-8 is open, airy and detailed. The transient response is remarkable: it is coherent from the low-end to the high-end, making up-front percussive instruments stay up-front and snappy, without adding any harshness. All in all, then, the sound of the Convert-8 can be described as deep and wide, and at the same time transparent and musical. Pairing the two, spreading out a mix on eight channels and listening to the result, I was instantly blown away by the transparency and stereo width.

    The low-end depth and punch was equally impressive, and the same was true of the transient response. Since that review, the Convert-8 has been acting as my main multi-channel DAC, feeding an eight-channel analogue mixer from Dangerous Music.