Speed limits research
Discussion
If I’ve read it correctly, it appears to suggest that if speed limits are set too low, people pay less attention and crash more.
https://www.sciencedaily.com/releases/2018/12/1812...
Stolen from another car related forum.
https://www.sciencedaily.com/releases/2018/12/1812...
Stolen from another car related forum.
The alternative way to view this of course is that if drivers did observe the posted limit that was set 10-25mph lower than the engineering model rather than ignoring the limit even better reductions in casualties would be realised.
The research is showing that the lower speeds that were realised resulted in a reduction in casualties. Even slower average speeds would therefore drive the casualties even lower.
You have therefore, not found the petrol-head panacea to keep limits high when it is perceived low limits will reduce unacceptable speed and casualties.
Death and injury are firmly in the hands of those who refuse to be regulated, the publication clearly illustrates that.
The research is showing that the lower speeds that were realised resulted in a reduction in casualties. Even slower average speeds would therefore drive the casualties even lower.
You have therefore, not found the petrol-head panacea to keep limits high when it is perceived low limits will reduce unacceptable speed and casualties.
Death and injury are firmly in the hands of those who refuse to be regulated, the publication clearly illustrates that.
Exige77 said:
If I’ve read it correctly, it appears to suggest that if speed limits are set too low, people pay less attention and crash more.
https://www.sciencedaily.com/releases/2018/12/1812...
Stolen from another car related forum.
They used to have to pretty much adhere to the 85th percentile before reducing a speed limit, this was apparently too prescriptive so they got rid of it, now few do. Turns out pretty much no matter what the average speed at any time is, drivers who chose to travel between the 85th and 90th percentile are the safest but this is one of those inconvenient truths. So in a system where the 85th percentile is above the speed limit (UK free flowing motorways for example) those within the speed limit are less safe. https://www.sciencedaily.com/releases/2018/12/1812...
Stolen from another car related forum.
Edited by Graveworm on Sunday 16th December 19:34
Pica-Pica said:
I think the issue is perhaps about survivability of crashes, as much as a reduction in numbers.
Except the posted study and similar in British Colombia found " ..there was an increase in fatal and injury crashes at locations with posted speed limits set 10 miles per hour or more below engineering recommendations."Graveworm said:
Pica-Pica said:
I think the issue is perhaps about survivability of crashes, as much as a reduction in numbers.
Except the posted study and similar in British Colombia found " ..there was an increase in fatal and injury crashes at locations with posted speed limits set 10 miles per hour or more below engineering recommendations."It is those with attitudes like yours to the regulation of traffic that are responsible for the proliferation of road trauma. You are also responsible for the increase in speed enforcement activity. It should be made more efficient, cost effective and to cover the whole road network. I predict it soon will.
Well done.
Repel_Max said:
No. The posted study and similar in British Colombia found " ..there were a number of drivers who deliberately defied the posted speed limits and there was insufficient enforcement to cause them to observe that limit...if the drivers were made to observe the limit then the designed reductions in casualties would have been realised..."
It is those with attitudes like yours to the regulation of traffic that are responsible for the proliferation of road trauma. You are also responsible for the increase in speed enforcement activity. It should be made more efficient, cost effective and to cover the whole road network. I predict it soon will.
Well done.
Why am I responsible for increased enforcement? It is those with attitudes like yours to the regulation of traffic that are responsible for the proliferation of road trauma. You are also responsible for the increase in speed enforcement activity. It should be made more efficient, cost effective and to cover the whole road network. I predict it soon will.
Well done.
Where does it say that the speed travelled within limits 20 mph below the engineering limit was higher than 5mph below just that it wasn't complied with and was more dangerous.
Yet, it doesn't change the fact that no matter what speed the traffic is moving at the safer drivers are travelling above the average speed.
Edited by Graveworm on Sunday 16th December 21:21
Graveworm said:
Repel_Max said:
No. The posted study and similar in British Colombia found " ..there were a number of drivers who deliberately defied the posted speed limits and there was insufficient enforcement to cause them to observe that limit...if the drivers were made to observe the limit then the designed reductions in casualties would have been realised..."
It is those with attitudes like yours to the regulation of traffic that are responsible for the proliferation of road trauma. You are also responsible for the increase in speed enforcement activity. It should be made more efficient, cost effective and to cover the whole road network. I predict it soon will.
Well done.
Why am I responsible for increased enforcement? It is those with attitudes like yours to the regulation of traffic that are responsible for the proliferation of road trauma. You are also responsible for the increase in speed enforcement activity. It should be made more efficient, cost effective and to cover the whole road network. I predict it soon will.
Well done.
Where does it say that the speed travelled within limits 20 mph below the engineering limit was higher than 5mph below just that it wasn't complied with and was more dangerous.
Yet, it doesn't change the fact that no matter what speed the traffic is moving at the safer drivers are travelling above the average speed.
Edited by Graveworm on Sunday 16th December 21:21
You have made the most common mistake in this type of analysis. Did you do it on purpose or by accident?
Repel_Max said:
Here is the chart with the casualty risk added. The safest drivers are not where you thought they were.
You have made the most common mistake in this type of analysis. Did you do it on purpose or by accident?
Interested to see the source of the data for your line because it is at odds with UK data. Only 15 percent of fatal accidents were above the speed limit - far less than the proportion of vehicles doing the same. You have made the most common mistake in this type of analysis. Did you do it on purpose or by accident?
Edited by Graveworm on Sunday 16th December 21:44
Graveworm said:
Why am I responsible for increased enforcement?
Where does it say that the speed travelled within limits 20 mph below the engineering limit was higher than 5mph below just that it wasn't complied with and was more dangerous.
Yet, it doesn't change the fact that no matter what speed the traffic is moving at the safer drivers are travelling above the average speed.
My advice is to not feed this troll (repel_min). He can spout all his anti speed BS but he/she can’t do much about it. He can keep dreaming about the level of hardcore speed enforcement though, it’s a good laugh Where does it say that the speed travelled within limits 20 mph below the engineering limit was higher than 5mph below just that it wasn't complied with and was more dangerous.
Yet, it doesn't change the fact that no matter what speed the traffic is moving at the safer drivers are travelling above the average speed.
Edited by Graveworm on Sunday 16th December 21:21
Repel_Max said:
if the drivers were made to observe the limit then the designed reductions in casualties would have been realised...
You really don't understand people do you? Repel_Max said:
It should be made more efficient, cost effective and to cover the whole road network. I predict it soon will.
Good luck with that. The recent lowering of limits and increase in enforcement has worked so well in France: https://www.thelocal.fr/20181211/why-are-half-of-f...France introduced a blanket speed limit of 80kph on single carriageway roads in July this year. On a twisty country lane this may have made some sense, but on an arrow-straight RN it merely heightens the frustration from what probably seemed an artificially low 90kph limit.
The justification was accident reduction, but no data was provided to support the claim. Although it has not been mentioned in reporting of the gilet jaunes unrest, it is yet another example where Macron’s imperialness is frustrating huge sections of the population in rural areas.
I am certain that at the end of the two year trial, it will be found to have had a negative impact on accident reduction. In the summer huge platoons of traffic now build up, so that some drivers start taking greater risks trying to overtake them
In the UK, I feel that artificial speed reduction is used to passify residents of country areas where building a bypass in the 1960’s was the obvious solution. As usual, too little; too late.
The justification was accident reduction, but no data was provided to support the claim. Although it has not been mentioned in reporting of the gilet jaunes unrest, it is yet another example where Macron’s imperialness is frustrating huge sections of the population in rural areas.
I am certain that at the end of the two year trial, it will be found to have had a negative impact on accident reduction. In the summer huge platoons of traffic now build up, so that some drivers start taking greater risks trying to overtake them
In the UK, I feel that artificial speed reduction is used to passify residents of country areas where building a bypass in the 1960’s was the obvious solution. As usual, too little; too late.
Graveworm said:
Interested to see the source of the data for your line because it is at odds with UK data. Only 15 percent of fatal accidents were above the speed limit - far less than the proportion of vehicles doing the same.
It looks like he's cut and paste the image, drawn his own line and the re-posted it.... the resolution on the added text is obviously different hahahaEdited by Graveworm on Sunday 16th December 21:44
Michael Mann would very much like his hockey stick back.321boost said:
My advice is to not feed this troll (repel_min). He can spout all his anti speed BS but he/she can’t do much about it. He can keep dreaming about the level of hardcore speed enforcement though, it’s a good laugh
Thanks, I thought originally it was someone interested in a debate, albeit with a different point of view. I didn't realise it was the poster formally known as Ghe13rte. Speeding is against the law, anyone is entitled to think that the law should be complied with and enforced. I only have an issue when they overstate the safety aspect and dismiss anything negative, as a way to justify it.
outnumbered said:
Graveworm said:
Thanks, I thought originally it was someone interested in a debate, albeit with a different point of view. I didn't realise it was the poster formally known as Ghe13rte.
Also tapereel, pitmansboots, etc.I thought pitmansboots was hung, drawn and quartered years ago.
I heard various body parts were sent to the 4 corners of the PH empire and his head is now mounted on a stick outside agt law's lair, sorry, chambers.
That should serve as a warning to anybody.
Gassing Station | Speed, Plod & the Law | Top of Page | What's New | My Stuff