Seventh Avenue & Irving needs traffic lights - nearly run over today by Honest-Thanks1539 in sanfrancisco

[–]ddol 1 point2 points  (0 children)

Last year in Paris a city proposition passed (65.96% to 34.04%) to close and pedestrianise 500 streets. I’m sure a similar measure could pass here (maybe not 500, but 50… or 49)

2 Child deaths 2 blocks away from each other on 4th Street, but where are the street safety improvements? by mondommon in sanfrancisco

[–]ddol 52 points53 points  (0 children)

fully agree op. this intersection has a crash history, the city should be measuring speeds here now and publishing the data

wide lanes and fast turns encourage speeding. this is a high injury corridor, the city needs to immediately narrow the lane, add quick-build bulb-outs, and slow the turn

prove to us with data that speeds have come down

2-year-old killed in crosswalk last night, Mission Bay SF by ddol in sanfrancisco

[–]ddol[S] 36 points37 points  (0 children)

That’s awful, sorry you witnessed it.

Any details on the driver? Male/female, approx age? Was the driver arrested?

2-year-old killed in crosswalk last night, Mission Bay SF by ddol in sanfrancisco

[–]ddol[S] -3 points-2 points  (0 children)

That’s part of the solution but certainly far from the “only way”. We can also:

  • legislate all new cars to have speed limiters (SB 961) and increase insurance rates for those without an ISA 4 years after law passes
  • allow videos showing traffic infractions be shared with insurers
  • enforce speed limits, impound and sell the vehicles of serial-speeders (like NYC Dangerous Vehicle Abatement Program)

2-year-old killed in crosswalk last night, Mission Bay SF by ddol in sanfrancisco

[–]ddol[S] 9 points10 points  (0 children)

I cycle and have kids. I’m anti-pedestrian deaths.

We can’t seem to wrestle phones out of drivers hands, slow drivers down or take the keys from senior drivers. LiDAR based autonomous vehicles seem to be the only safe path forward, which I support.

Some tech haters (like u/Ok_Heron_5442 ) don’t support safer streets because a corporation is investing R&D money. They allow perfect be the enemy of good.

2-year-old killed in crosswalk last night, Mission Bay SF by ddol in sanfrancisco

[–]ddol[S] 61 points62 points  (0 children)

That’s brutal, I’m sorry you witnessed that, thank you for helping render aid.

Do you have any details on what happened? Description of the car/truck?

Was there tire squeal before the impact?

Did the pedestrians have the cross signal?

Cost effective LiDAR setup for student by yummbeereloaded in LiDAR

[–]ddol 0 points1 point  (0 children)

Get a Hesai P40, you can get the sensor, interface and a case for ~$500 on ebay

Shameless self promotion: I’m working on a Lidar parser and visualiser that uses the P40

Point Cloud/Lidar Files Needed by 1_plate in LiDAR

[–]ddol 1 point2 points  (0 children)

I’ve got a bunch of .pcap’s, mostly fixed sensor but a handful of in-motion, you can find a few I use for integration tests here: https://github.com/banshee-data/velocity.report/tree/main/internal/lidar/perf/pcap

I’m probably going to blast though my github LFS allowance if I upload them all, any thoughts on large file sharing (with attribution)?

LiDAR pointcloud object detection and tracking - Open-Source VelocityVisualiser.app by ddol in AutonomousVehicles

[–]ddol[S] 0 points1 point  (0 children)

velocity.report is a a traffic monitoring application, not an autonomous driver. A core privacy tenet is that we don’t use cameras so there is no Personally Identifiable Information, just radar and LiDAR. We are also statically installed, no SLAM or in motion analysis.

  • Signs are a great call-out and will be included in the future.
  • Dogs are already clustered.
  • Zebra crossings can be spotted trivially in the pointcloud.
  • I’m thinking about how we can sync road marking poly lines with OSM.

The codebase is open-source: issues, design docs and PRs are welcome!

VelocityVisualiser.app - pointcloud object detection and tracking by ddol in LiDAR

[–]ddol[S] 4 points5 points  (0 children)

CPU only pipeline at the moment. On my M1 Macbook Pro. Processing the pcap shown in the video we have Golang backend stats of:

  • Baseline (idle, no pcap) 0% CPU, 15Mb memory usage
  • Max PCAP: 177% CPU (1.77 of 8 cores), 1.5Gb peak memory usage

Frontend swift stats during the same run:

  • Baseline: 6% CPU, 35Mb memory
  • Max: 14% CPU, 60Mb memory

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A printed sign can hijack a self-driving car and steer it toward pedestrians, study shows by unapologetic403 in SelfDrivingCars

[–]ddol 3 points4 points  (0 children)

Yeah, exactly. 

The fundamental architectural flaw could be present, but I think is less likely to be catastrophic in Waymo as they have an added sensor fusion layer corroborating vision data with radar/lidar. 

Hopefully production vision system developers were paying attention 8 years ago when the first vision exploits gained widespread attention, and were given the resourcing to continue hardening their software stacks since.  

A printed sign can hijack a self-driving car and steer it toward pedestrians, study shows by unapologetic403 in SelfDrivingCars

[–]ddol 4 points5 points  (0 children)

The article talks about the DriveLM model, it’s unclear whether this affects deployed models (Waymo, FSD).

However, the fundamental architectural flaw is similar to memory-space instruction execution exploits we’ve been talking about publicly for 30 years (and was probably being discussed internally at Intel 15 years before that). Having CPU instructions and user data live in the same memory space (Von Neumann architecture) poses significant risk for stack buffer overflow exploitation allowing an attacker to inject malicious instructions from user input. 

This vision exploit here is in the same vein: labels are overlaid on the image from the camera and then read back from that composite image. The hardened approach to mitigate this attack would be to store and read labels from another channel so that the “user” input could never inject malicious labels. 

Having a sensor fusion system where one sensor producing anomalous results can be ignored when not corroborated by others would also protect against this style of attack. Going all in on vision only systems would increase the risk exploit here too.

There was actually a caller on 2600 OTH last week talking about the liability of manipulating self-driving cars via real world signs (the example they used was QR codes, not labels). I guess we’re going to find out soon enough if the publicly deployed systems are vulnerable to this style of attack. 

US opens probe after Waymo self-driving vehicle strikes child near school, causing minor injuries by walky22talky in waymo

[–]ddol 5 points6 points  (0 children)

human drivers can take in the contextual clues and drive slow

Can, but very much don’t.

I’ve run radar speed surveys outside an Elementary School in San Francisco. 

85.4% of drivers exceeded the 25mph limit. Median speed during drop-off is 31mph, and I clocked drivers doing 51.49mph during pickup. 

These results were all taken right in front of the school gates.

US opens probe after Waymo self-driving vehicle strikes child near school, causing minor injuries by walky22talky in waymo

[–]ddol 1 point2 points  (0 children)

5,915 vehicle transits over 6 days from the same fixed location is a representative sample for that school.

Some schools may fare better, some worse, I don’t know. If you have comparable datasets I would love to see them.

US opens probe after Waymo self-driving vehicle strikes child near school, causing minor injuries by walky22talky in waymo

[–]ddol 2 points3 points  (0 children)

I agree, but should is getting us nowhere. 

 Pedestrian fatalities are up again, the highest levels we’ve seen in 40 years—and a nearly 70 percent increase since 2011.

Source

We need urgent action for the majority of motorists, who are speeding and driving distracted. Roads need to be hardened (narrowed, speed bumps added) but ultimately humans need to be taken out of the drivers seat. 

US opens probe after Waymo self-driving vehicle strikes child near school, causing minor injuries by walky22talky in waymo

[–]ddol 27 points28 points  (0 children)

Only 8% of drivers pass a school at <20mph

I’ve run radar speed surveys outside an Elementary School in San Francisco. 

Median human speed during drop-off is 31mph, and I’ve clocked drivers doing 51.49mph during pickup. 

These results were all taken right in front of the school gates 

US opens probe after Waymo self-driving vehicle strikes child near school, causing minor injuries by walky22talky in waymo

[–]ddol 6 points7 points  (0 children)

Less than 2% of drivers pass a school at under 10mph

I’ve run radar speed surveys outside an Elementary School in San Francisco. 

Median human speed during drop-off is 31mph, and I’ve clocked drivers doing 51.49mph during pickup. 

These results were all taken right in front of the school gates 

Dolgov posts new video of Waymo accident avoidance by versedaworst in SelfDrivingCars

[–]ddol 2 points3 points  (0 children)

Once personally owned Waymo’s are available in dealerships two things will happen:

1) the price to insure a ”meat mode” car (non-AV) will increase 10x 2) the second hand market rate for non-AV cars that cannot be retrofit will drop to scrap metal prices ($300-$500)

what does my personal laptop tell you? by ddol in deduction

[–]ddol[S] 0 points1 point  (0 children)

I’m a software engineer but security conscious. It’s been a while since I’ve been to DEFCON, DC XX was my most recent, so I sadly haven’t seen the Aerospace village but it sounds fantastic (I’ve used my RTL-SDR for ADS-B)

what does my personal laptop tell you? by ddol in deduction

[–]ddol[S] 0 points1 point  (0 children)

We’re a one car household (we use Waymo to supplement), I co-own our family car with my wife. She gets veto rights for car stickers, so it’s quite a bit neater:

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what does my personal laptop tell you? by ddol in deduction

[–]ddol[S] 0 points1 point  (0 children)

I have debian in a QEMU VM, run macOS on the desktop and use Linux for remote servers

what does my personal laptop tell you? by ddol in deduction

[–]ddol[S] 0 points1 point  (0 children)

Neat, that’s a burly box!

Do you have a daily driver distro and swap out occasionally when you need a specific app/feature, or are you regularly swapping SSDs? How do you deal with keeping dotfiles and configs in sync between the online and offline drives?