- Tazer/Axon makes some kind of police oriented hw/sw platform thats deployed on police bodies and cars
- which uses BLE
- Tazer/Axon has their own BLE MAC address prefix, which is published by the FCC
- The less significant bytes of BLE MAC address are a unique id for the hardware, which usually maps 1:1 with 1 officer or 1 car
- So by listening to or probing some BLE crap you can infer cops are present close to where that MAC address prefix is, and by recording over time and area figure out movement patterns even to the level of individual hardware.
In more than 100 countries, Tetra (Trans European Trunked Radio) is used.
This was published a couple of months ago.
https://github.com/MidnightBlueLabs/TETRA_burst
http://rageuniversity.com/PRISONESCAPE/JAMMING%20RADIO%20GSM...
The web offers a fairly universal cross-platform, network-accessible GUI that can be developed with really high-level languages which happen to offer tooling that includes an extremely-empowering degree of readily-available utility libraries. What other language or ecosystem is as easy and broadly-accessible?
I still watch it once every couple of years, still love / hate it.
No regrets! It was over-the-top, corny and very fun.
Teenage-me would have been totally infatuated with the glamorous hacker lifestyle!
For those who might have missed them, these may be entertaining, if not inspiring: www.ign.com/articles/best-hacker-movies
“The little boat flipped over.”
Gets me every time.
Super cool talk, thanks for sharing.
Speed traps are the worst.
The city has (imo) a psychotic driving culture, but is still roughly middle-of-the-road in us news and world report's ranking of most dangerous US cities to drive in.
Large speed deltas are (conjecture I haven't bothered to research) probably unsafe under any conditions. Exceeding safe speeds for the conditions is obviously dangerous, but the size and design of the road and it's lanes are some of those conditions.
I don't particularly care which, but in order to minimize speed deltas I do think it should be incumbent on the state to either set low speed limits and fastidiously police them or else set speed limits that are close to the natural speeds a given road supports to cut down the gap between people who drive the road as it feels and those who drive the signage.
https://dot.ca.gov/programs/safety-programs/setting-speed-li....
By now the evidence is clear: people will drive at the speeds they feel comfortable at given their environment (sight lines, spaciousness, density, etc.). Just putting a sign on the side of a wide and spacious road is not going to do much to affect driving speeds.
The most interesting one to me was how tree-lined streets encourage slower driving without any speed limit signs, because it feels more like a tunnel and less like an open road.
There's really only one solution that works to prevent speeding: road design. Make roads less straight, less big. Add more obstacles and flow interrupts.
Private cars are obsolete anyway. Replace more lanes with bus lanes and be done with the problem altogether. It's frankly insane that we allow people to operate a private car with nothing more than a license they got at 16 years old and never tested again for for the 70+ years after they'll be driving.
Many speed limits are set lower than they need to be. On many roads, including freeways, the average speed of traffic is higher than the speed limit. Driving the speed limit on these freeways is dangerous.
Additionally, many speedometers read slightly higher than the actual speed. Driving the exact speed limit on many roads as shown by your speedometer means you are actually driving quite slow.
Repecting the speed limit as a strict rule is dangerous.
...the only correct response to which is to contact the state government and complain while continuing to respect the law. Breaking the law while remaining silent is diametrically opposed to the democratic system that the US, at least, aspires to.
> need to be
...oh, and vehicle inefficiency increases superlinearly with speed[1]. Until the majority of the vehicles on the road are electric, lower speed limits help fight climate change. Speed limits don't "need to be" anything, and picking lower limits when there's a good reason is good.
> On many roads, including freeways, the average speed of traffic is higher than the speed limit.
Because drivers follow this flawed line of thought en masse - which doesn't excuse it.
> Driving the speed limit on these freeways is dangerous.
I guess we need more enforcement, then. Plus, I've never encountered a dangerous situation while driving in the right lane. I suspect that there's an implicit "...in the left lane" on your claim.
> Driving the exact speed limit on many roads as shown by your speedometer means you are actually driving quite slow.
Citation needed for the claim that you're "driving quite slow". I've never seen a speedometer that was off by more than 4 MPH (measured as the difference between that and GPS), and a difference of 4 MPH when you're going 55 is not "quite slow".
> Repecting the speed limit as a strict rule is dangerous.
It's called a "limit" for a reason, and the only reason it's non-trivially dangerous is because of other drivers significantly breaking the speed limit, too.
This has inspired me to contact my local state's transportation department and request that they step up enforcement of speed limits.
Sounds like you are a qualified expert and know more about road design, traffic flow and pedestrian safety than those doing the job now.
Clearly you need to apply for a position so you can right these so obvious wrongs.
Please, don’t pretend you can do the job better than qualified experts
It's unmarked cop cars while I'm over taking that bother me the most.
My comment isn't anything about you personally, and I've had similar reactions to even cheaper software. But it still find it striking when I think about it more.
In my experience, doing the math on monetary value of time spent on random activities or interactions just makes everybody sad and doesn't lead to better decisionmaking.
My family is well above the median household income in my state and my county (maybe almost 2x the median), yet due to horrible timing awards, the median house payment would put as at 40% of gross pay, or 62% of take home pay.
No one is well off right now.
Edit: ah, found it myself by searching the web: https://github.com/datapartyjs/rfparty-monitor
I always wondered if there was a particular RF signature to LE vehicles(say, the radiated IF from their radios). This seems more reliable and easier to setup.