"More than half of Helsinki’s streets now have speed limits of 30 km/h."
This is the only secret.
People over speeding is what kills.
replies(15):
This is the only secret.
People over speeding is what kills.
People who are likely to have crashes are likely to be able who ignore the limit. One of the biggest problems in modern policy-making is the introduction of wide-ranging, global policies to tackle a local problem (one place that introduced this limit was Wales, they introduced this limit impacting everyone...but don't do anything about the significant and visible increase in the numbers of people driving without a licence which is causing more accidents...and, ironically, making their speed limit changes look worse than they probably are).
I have no idea about your stats on driving without a licence being more of a problem than speeding, accidents on roads that got the speed reduced to 20mph or 30mph decreased by 19% YoY, that's a big impact for mostly no additional policing needed.
It sounds like a big impact if you don't know anything about statistics because, obviously, you would need to know some measure of variance to work out whether a 19% YoY decrease was significant (and I don't believe the measure that reduced 19% was accidents either). This hasn't been reported deliberatel but that is a single year and that is within error. You, obviously, do need more policing...I am not sure why you assume that no policing is required.
People driving without a licence/insurance are more of a problem than someone going 30mph...obviously. Iirc, their rate for being involved in accidents is 5x higher. If you are caught doing either of these things though, the consequences are low. Competent driver going 30mph though? Terrible (there is also a reason why this is the case, unlicenced/uninsured driving is very prevalent in certain areas of the UK).
You don't need additional policing as you can reuse most of the speed limit infra that's already in place, just the baseline that has changed. It's orders of magnitude easier compared to the effort to catch a single unlicensed uninsured driver.
And regarding the stats: the official report is just one google away https://www.gov.wales/police-recorded-road-collisions-2024-p.... The numbers are declining in the last decade but it accelerated to rates not seeing in the past apart from the pandemic.
> These collisions on 20 and 30mph road speed limits (combined), resulted in 1,751 casualties, the lowest figure recorded since records began. This was a 20% decrease from the previous year, the largest annual fall apart from 2020 (during the COVID-19 pandemic).
About collisions: > ... It is also 32% lower than the same quarter in 2022 (the last quarter 4 period before the change in default speed limit)
And casualities: > ... The number of casualties on roads with 20 and 30mph road speed limits (combined) in 2024 Q4 was the lowest quarter 4 figures in Wales since records began.
There's no mention of widespread licence or insurance compliance problems on the official report so not sure where you're taking this as a significant problem.