tagging @sofio @BarbChamberlain for answers and/or reach
@DrTCombs @BarbChamberlain I’m not sure if they do much. And infact that could hurt, as drivers could rely on them and think they don’t need to yield when they aren’t present.
I only recommend them for the most dangerous of permissive conflicts
@sofio @BarbChamberlain Thanks, Petru. That's my sense as well - ineffective at best, likely counterproductive in many contexts. It seems to be the go-to here though, I suspect because it's the only countermeasure allowed without moving heaven & earth.
But I can't find any research into its efficacy, or the efficacy of any signage-only safety countermeasures. My hunch is that the stakes are low...signs are cheap and thus not deemed worth analysis.
@DrTCombs @BarbChamberlain a no turn on red sign would be a better use of sign material IMO
@DrTCombs @sofio @BarbChamberlain I’m uncertain of the answer to your question, but you may be interested in recent changes to the highway code in the United Kingdom, particularly rule H2: https://www.gov.uk/government/news/the-highway-code-8-changes-you-need-to-know-from-29-january-2022