public-safety   54

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Shade
one casualty of designing cities around the needs of automobiles is access to shade, as available public space is consumed for streets and parking, and pedestrians' need for shade must compete with drivers' need for visibility. in los angeles, shade is unevenly distributed -- for example, tree canopy cover is 53% in bel air, but 10% in south l.a.. in areas targeted by police, shade loses out to surveillance, as trees are cut down to clear sightlines for cameras and helicopters. designers of public parks are constrained because shady areas allow people to congregate, and "Los Angeles obviously has a very conflicted position towards creating shelter in the public realm." and it's not just shade from trees: even the locations of shaded bus shelters were decided on by advertising companies who want to target more affluent consumers. meanwhile individuals and businesses wanting to create ad hoc shade structures run into regulatory enforcement. with rising temperatures and an increasing number of people living without shelter, shade is a public health issue -- one study found the difference in surface temperature between shaded and unshaded asphalt was 40 degrees fahrenheit. los angeles was not always this way -- the article traces a change in the landscape, away from shade, to the availability of cheap electricity in 1936. since then, parts of the l.a. have become "shade deserts."
public-space  public-infrastructure  public-safety  shade  climate-change  livability  car-culture 
april 2019 by tarakc02
Help Support RadioCapture – A Project that Records Entire Trunked Radio Systems and Provides Online Access to Audio
RadioCapture.com is a website run by Matt Mills that is capable of automatically capturing trunked radio communications from various agencies such as the emergency services and creating publicly accessible historical and live logs of the audio. This is a concept different to radio scanner streams, as all audio is logged and historical audio can be accessed easily at any time.
RTL-SDR  surveillance  public-safety 
april 2019 by pierredv
As critical communications turn towards 3GPP, dedicated spectrum loses its lustre | PolicyTracker: Mar 2019
But more countries around the world are looking to use broadband technologies to improve their critical communications. Many of these solutions will use portions of the 700 MHz band and other frequencies identified in ITU-R Recommendation M.2015 (adopted four years ago at WRC-15), such as 380—470 MHz.
PolicyTracker  public-safety 
april 2019 by pierredv
Here's how Paradise ignored warnings and became a deathtrap - Los Angeles Times
> A Los Angeles Times investigation found that Paradise ignored repeated warnings of the risk its residents faced, crafted no plan to evacuate the area all at once, entrusted public alerts to a system vulnerable to fire, and did not sound citywide orders to flee even as a hail of fire rained down.
fire  california  ca-fires  paradise  infrastructure  public-safety 
december 2018 by tarakc02
Are the Police Using Smart-Home IoT Devices to Spy on People? - Schneier on Security
"IoT devices are surveillance devices, and manufacturers generally use them to collect data on their customers. Surveillance is still the business model of the Internet, and this data is used against the customers' interests: either by the device manufacturer or by some third party the manufacturer sells the data to. Of course, this data can be used by the police as well; the purpose depends on the country. "
Bruce-Schneier  IoT  public-safety 
november 2018 by pierredv
[pdf] Why (Special Agent) Johnny (Still) Can’t Encrypt: A Security Analysis of the APCO Project 25 Two-Way Radio System
Usenix 20, 2011
Sandy Clark, Travis Goodspeed, Perry Metzger, Zachary Wasserman, Kevin Xu, and Matt Blaze

"We found a number of protocol, implementation, and user interface weaknesses that routinely leak information to a passive eavesdropper or that permit highly efficient and difficult to detect active attacks.
"new selective sub-frame jamming attacks against P25
active attacker with very modest resources can prevent specific kinds of traffic (such as encrypted messages) from being received, while emitting only a small fraction of the aggregate power of the legitimate transmitter
"found that a significant fraction of the “encrypted” P25 tactical radio traffic sent by federal law enforcement surveillance operatives is actually sent in the clear, in spite of their users’ belief that they are encrypted"
P25  public-safety  hacking  spectrum  cybersecurity 
october 2018 by pierredv
Industry Leaders Address Public-Safety 800 MHz Interference Issues - Nov 2017
"Even as 800 MHz rebanding finally winds down, 800 MHz interference issues continue to plague public-safety communications officials. New cellular carrier rules in the band will likely affect public-safety networks nationwide."
800MHz  interference  public-safety 
august 2018 by pierredv
Future of UK’s planned emergency services network could be in doubt | PolicyTracker, June 2018
"The future of the UK's planned Emergency Services Network (ESN)–the LTE-based communications system being developed for the country's police, paramedics and fire services–could be in doubt."
PolicyTracker  LTE  UK  public-safety 
june 2018 by pierredv
Public Safety Advocate: Hurricane Aftermath | Andrew Seybold, All Things FirstNet, Oct 2017
via Dale Hatfield
"in the Harvey hurricane most cell sites stayed up and operational"
"in the Houston area are that most of the public safety land mobile radio and Harris County Band 14 LTE public safety broadband networks remained in operation and were heavily used during and after the storm"
Irma: "the seventh day we see only 437 sites of the 14,730 reporting still out of service"
"In areas such as the Puerto Rico it was simply not possible to pre-stage people and equipment because of dire warnings posted about Maria coming ashore as a Category 5 storm. "
"During the first days after the storm it was reported that most UHF and VHF public safety land mobile radio systems were up, or at least usable on a unit-to-unit or simplex basis"

"Houston faired pretty well with its Band 14 system (FirstNet)."
"Irma was worse. " (few details?)

"I think the lessons learned in Puerto Rico are to harden high-priority sites better and to add more battery and generator backup, but more than anything to have backup capabilities in the form of drones (UAVs), flying and stationary COWs, and satellite backhaul sooner than this time around."

"If FirstNet was up and running in Puerto Rico, would it have survived what Maria did to the island? To answer that question, you have to ask another question: Just how much money should be spent on ensuring a network is reliable even during a Maria? "
public-safety  Andrew-Seybold  resilience  FirstNet 
october 2017 by pierredv
The Myers Model®: FirstNet is failing and AT&T knows it? Verizon makes sense! The FirstNet Swamp needs to be drained!
Via Dale Hatfield

"One thing everyone needs to understand, is that the failures that Public Safety is facing today is not the fault of AT&T. The quagmire within the FirstNet plan is the result of the lack of understanding and the ill-equipped commercial experience of the management team within the FirstNet organization – note I did not say the Board, but they too have some issues to face."
FirstNet  public-safety  AT&T  Verizon 
september 2017 by pierredv
Public Safety Advocate: Public Safety Grade | Andrew Seybold All Things FirstNet, Sep 2017
via Dale

"What he did not say and what I hope to show in this week’s Advocate is that there are differences between public safety grade for Land Mobile Radio (LMR) sites and an LTE network. It is important for LMR communications professionals to understand these differences and not hold AT&T to public safety grade for every cell site in the network. The methodology for hardening an LTE network is different but effective and it is these differences that need to be understood."
public-safety  LTE  AT&T  NPSTC  Andrew-Seybold  resilience 
september 2017 by pierredv
UK LTE PPDR project “marred from day one” — PolicyTracker, Apr 2017
"As another damning report from the influential UK Public Accounts Committee (PAC) into the progress of the project is released, we reveal some of the concerns we have heard from sources close to the project.

The PAC, a group of members of parliament, said last week that it was “extremely disappointing that the [Home Office’s] risk management and assurance arrangements did not pick up earlier the risk that emergency services communications could be unsupported from April to September 2020.”"

"The transition to the new network is now not due to start until July 2018, even though the Home Office - the government department in charge of the ESN - told the PAC in November that it would start this September. Significant delays were expected by many commentators, not least because much of the user equipment does not yet exist and key standards are still in development."
LTE  public-safety  PolicyTracker  risk-management  Motorola  Airwave  Vodafone 
april 2017 by pierredv
The Myers Model®: FirstNet - The Wolf in Sheep's Clothing? Feb 2017
"In short, if a State decides to “Opt-In”, then it will pay, with its own state taxpayer funding. What FirstNet is offering is a sheep in wolf’s clothing. For a statement to be made “that requires no additional federal funding” is a dubious, implausible and very misleading. "
FirstNet  public-safety 
march 2017 by pierredv
Europe's PPDR industry to stick with Tetra for next 10 years — PolicyTracker: Feb 2017
"Europe's PPDR industry is sceptical about the progress of the UK’s LTE PPDR network programme and is pursuing a more evolutionary approach to the development of critical communications technology."
PolicyTracker  LTE  public-safety  Tetra  Europe 
february 2017 by pierredv
Spending watchdog says UK government underestimated risks of LTE PPDR network — PolicyTracker - Sep 2016
"A National Audit Office (NAO) report concludes that it was a desire to save money that led the UK government to try something that with the exception of South Korea, which has a much better geographic LTE coverage, has not been tried anywhere else in the world – running an emergency services network (ESN) over a commercial supplier's network."
PolicyTracker  public-safety  LTE  UK  PPDR 
september 2016 by pierredv
Police Baffled? Send For The Radio Amateurs! | Hackaday Aug 2016
"Eventually they approached the ARRL, the USA’s national amateur radio organisation, who sent along [Kermit Carlson, W9XA] to investigate. He fairly quickly identified the frequencies with the strongest interference and the likely spot from which it originated, and after some investigation it was traced to a recently replaced neon sign power supply."
Interference  RF-noise  public-safety  ARRL 
august 2016 by pierredv
EE and Nokia testing drones for extra coverage in "crisis" situations — PolicyTracker: the spectrum management newsletter
Sounds like drones will be deployed as pico-cells
"The UK operator told PolicyTracker that drones would not be part of the day-to-day operation of the emergency services network (ESN) it will begin running next year, but they could be used to establish impromptu networks when there is "crisis"."
PolicyTracker  drones  public-safety  EE  Nokia  PPDR 
august 2016 by pierredv

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