What did they do to reduce speeding? Speed cameras? Bumps?
Higher speed limit?
this post was submitted on 30 Sep 2025
101 points (100.0% liked)
Fuck Cars
13433 readers
824 users here now
A place to discuss problems of car centric infrastructure or how it hurts us all. Let's explore the bad world of Cars!
Rules
1. Be Civil
You may not agree on ideas, but please do not be needlessly rude or insulting to other people in this community.
2. No hate speech
Don't discriminate or disparage people on the basis of sex, gender, race, ethnicity, nationality, religion, or sexuality.
3. Don't harass people
Don't follow people you disagree with into multiple threads or into PMs to insult, disparage, or otherwise attack them. And certainly don't doxx any non-public figures.
4. Stay on topic
This community is about cars, their externalities in society, car-dependency, and solutions to these.
5. No reposts
Do not repost content that has already been posted in this community.
Moderator discretion will be used to judge reports with regard to the above rules.
Posting Guidelines
In the absence of a flair system on lemmy yet, let’s try to make it easier to scan through posts by type in here by using tags:
- [meta] for discussions/suggestions about this community itself
- [article] for news articles
- [blog] for any blog-style content
- [video] for video resources
- [academic] for academic studies and sources
- [discussion] for text post questions, rants, and/or discussions
- [meme] for memes
- [image] for any non-meme images
- [misc] for anything that doesn’t fall cleanly into any of the other categories
Recommended communities:
founded 2 years ago
MODERATORS
Higher speed limit?
🤣 took me a few seconds, but made me smile
The LED sings that show your speed are really good at keeping you from speeding by distracting your attention to the possibility of getting a ticket or being stopped by a cop and sent to Bolivia. Oh pedestrians? Yeah those people!
Same for the stupid morning cop near the education centers... I'm not looking for kids who might jump into the road. I'm looking for cops who might give me a ticket. And it doesn't help that you gotta go at 20mph in that zone which is below some Toyota magical hybrid threshold that kills my battery if I keep going that speed for a few meters.
Yeah I think it would be best to have GPS controlled speeds on every car. That way you could do your driving as safe as possible and cops could go find someone else to murder. In the suburbs near Seattle you can't not have a car. We don't have a good public transport infrastructure yet. But we're getting there soon. Like I already have a bus lane within 3 blocks of my home....still a terrible idea during winter. A person could die waiting for a bus on winter. Also on winter not all cars can actually drive on ice and similarly a bad idea for bicycles. But that's a different story.
4, 6, and 7 didn't have significant speeding rates to begin with. Did they (or any other sections) also have reduced speed limits? 5, 9, and 10 still ended with decently high speeding rates. Do they have plans to further address them?
How did they measure this data? I guarantee you that sentence is false because it's impossible to measure such a thing.
Impossible? All it takes is two rubber tubes across a street at a fixed distance apart and a little box on one end to calculate the speed based on the time between wheels passing over them. Done all the damn time in the UK.
And they don't claim to measure it at every single location across the city. They claim to have measured it at ten locations. That takes, at most, twenty installations.
How do you figure?
Dude with a radar gun or two coils under the pavement.
At every single location in the city?
That sort of data actually is available these days, from brokers like Inrix that collect it from cellphone signals and traffic cameras and such.
Departments of Transportation trying to measure the impact of a specific project are still more likely to do it the semi-old-fashioned way, with traffic studies before and after, though.
At the 10 locations posted in the OP. Data is collected at the same time each year, and over a 48-hour period.
It's very easy to do, and since the number of vehicles recorded is often in the thousands, the trends would be very easy to see.
You should try this next time you get pulled over for speeding.
"But officer, how can you know I was speeding? It is impossible to measure such a thing!"
It's impossible to measure every single instance speeding. Just like it's impossible to measure crimes committed, just convictions or reports.
You don't need to know every single instance of speeding. You just a good representative sample, and then you can plot your trendline from that. That is how statistics like that are measured.
You can't measure actual crimes committed. However, you can make a reasonable guess by factoring in your known unknowns. For example, assume we have a significant sample of reported crimes in a city. Let's pull the number 50/100k people out of our rear end for example purposes.
As you pointed out, we only have the data from the reports. The total number is known unknown. We could then look at a different data set, like a survey, that says something like 20% of people who are victims of the crime never report it, or 20% of people admit to doing it and not getting caught, whatever the case may be.
So, we can cross reference those two statistics to estimate that the "real" rate of that crime is closer to 60/100k people. Even though neither study can predict that number individually.
"Real" crime rates are ridiculously high. Something like 2 per person per day.
Ok, let the numbers be for some specific crime then. I'm just walking folks through the math of where these sorts of claims come from. Not offering a political commentary on under-policing, or over-inclusive definitions of crime, or whatever else.