How Noisy Is Your Neighborhood?
npr.org
npr.org
Here's the link if you want to skip the article:
https://maps.bts.dot.gov/arcgis/apps/webappviewer/index.html...
EDIT: hmmm, seems to be a bug. I see in the console it's expecting JSON from this url: https://maps.bts.dot.gov/services/rest/services/Noise/CONUS_...
There's a big N-S swath for SLC, and then a smaller X at PVU for the frequent flightpaths.
Here's the example for daytime traffic noise: https://s.geo.admin.ch/722d116dec
Will definitely bookmark for when we buy. Road noise = less desirable.
while some bemoan commutes and laud living in cities, noise is one of the greatest reasons to not live in one. For me the costs are worth it.
i am curious how crime rates stack with noise levels, do higher levels simply have more crime because its a similar area or does the constant noise increase stress/fatigue to lead to more crime?
Sounds like a fun side project idea.
- For city level data you could either go on Autotrade and look at cars being sold in a given city over a 10 year period and hope that's a decent approximation, or somehow get car registration data.
Then map it over period of time to see highs and lows :)
I routinely run spatial analysis queries on a 400NM buffer around a large US airport and have spent many hours improving the efficiency of the queries due to the long run times on the largest RDS instances available. Running it for the entire national air space would be a significant project.
Edit: I pulled one random day of data - using the data source with the least frequent reporting period (ATC Center - one point every 12s) there were ~ 600,000 data points for one day of operations that arrived or departed from our facility (overflights or GA to smaller airports are easily another 15%. This is also clipped at a 400NM radius). Annualized that would ~220 million data points. If you are looking at ground noise then you would probably want to merge in the approach radar data which is approximately one point every 3 seconds for a ~60NM radius. We often run multiple years at a time. It might not be "big data" by the standards of some on HN but it's significant for many GIS shops!
https://www.trulia.com/MA/Boston/#map-live-well-traffic-volu...
I suspect there are more than a few people at the FAA and airports around the country who are not impressed that the U.S. Bureau of Transportation Statistics published this map. Community relations are hard enough without maps that use the wrong metric and show contours beyond a reasonable value in an urban area.
Leq is the Equivalent Noise Level, is the energy of sound averaged over a set time period (usually an hour, the BTS site is doing it over 24 hours).
Ldn/DNL is the Day-Night Noise Level. It's basically the same as a 24-hr Leq with one difference - 10 dB is added to noise levels generated between 10:00pm and 7:00am to account for increased/sleep sensitivity at night.
My guess is that the site uses Leq because highway noise data is generally calculated using peak hour Leq and it was easier to get airport Leq data than to calculate highway Ldn data.
Agreed. They should still know better than publishing something with contours out to 35 though! There is already a push by communities to mitigate aviation noise beyond the current level - 55 DNL is a number often thrown around and that often causes debate over ambient noise levels in an urban area etc. This map is going to cause headaches and confusion with the public.
Beneath a flight path should be warehouse / industrial and possibly commercial.
Why don't we keep it that way and protect bigger industrial boundaries around airports? I don't know, but it doesn't seem very realistic; it's too much prime land to control. Commercially zoned areas in every major metropolitan area have been approached, crowded, re-zoned or overtaken by residential development.
> future versions of the National Transportation Noise Map are envisioned to include additional transportation noise sources, such as rail and maritime.
That's in About.
As someone who must have been a guard dog in a previous life, I can sleep absolutely fine in the middle of a busy city or next to a busy road or near an airport. But it's the noise variations that gets me. IE in residential areas outside the city it's usually very quiet at night, except when it's suddenly not. In the cities its always pretty loud so there's little sudden change of noise.
The second time it crashed the whole device and forced a reboot!
Edit: Now we can have crowd-sourced maps of quiet places.
2. Too get a relative sense of how noisy it is compared to others you don't have experience with, instead of just an absolute noise value.