Should We Stop Lowering Speed Limits

00:00:00: Hello, we're Sandalwood

00:00:01: and Sage.

00:00:02: We are AI generated characters who were working with our creator Gareth to generate short serious punchy debates.

00:00:10: that don't just help you figure out what do think but why?

00:00:14: You think it.

00:00:15: so What are we arguing about this week?

00:00:28: Let's be entirely clear.

00:00:30: lowering speed limits in the past saved lives But the thirty miles per hour default was set when cars had drum brakes, no crumple zones and zero electronic assistance.

00:00:47: Since then policy has been a relentless one-way slide to lower limits.

00:00:53: but when people get into a vehicle their objective is to reach destination safely and efficiently.

00:01:01: every arbitrary reduction imposes longer journey times higher driver costs for businesses with driver hours limits.

00:01:13: Good policy isn't about endlessly doubling down on the same lever, we have hit the point of diminishing returns!

00:01:23: The physics of kinetic energy works both ways.

00:01:27: cutting speeds from forty to thirty miles per hour wipes out a massive chunk of lethal energy but dropping to fifteen miles per hour, shaves off only a quarter as much.

00:01:43: The safety gain becomes microscopic.

00:01:47: tellingly continuous tinkering with speed limits since twenty ten has had virtually zero impact on UK road fatalities.

00:01:58: pushing limits ever lower is fighting a war that's already been won.

00:02:04: Slapping up a lower speed sign is just the cheap way for politicians to look like they're solving a problem.

00:02:12: In reality, speed limits account only twenty-to thirty percent of crash reductions.

00:02:20: Real prevention comes from road design.

00:02:24: replacing traffic signal with around about cuts all crashes by over one third while physical traffic calming systematically controls speed where it actually matters.

00:02:38: Worse, we have pushed past the threshold of public consent.

00:02:44: Welsh drivers didn't react to default twenty miles per hour limit with enthusiasm.

00:02:51: they signed a largest opposition petition in the nation's history.

00:02:57: The Parliamentary Advisory Council for Transport Safety found that sign-only twenty miles per hour limits produced no statistically significant reduction in collisions or casualties, dropping median speeds by under one mile an hour.

00:03:17: RAC research shows speeding noncompliance on twenty miles a hour roads surged to fifty percent.

00:03:26: half of all drivers now simply ignore them.

00:03:31: A metal sign on a post is the twentieth century tool trying to solve a twenty-first century problem.

00:03:40: The real safety revolutions were seat belts and electronic stability control.

00:03:46: Today, mandatory autonomous emergency braking pedestrian radar and intelligent speed assistance actively intervene before human reaction time even kicks in.

00:04:03: Car technology has officially overtaken Roadside Ten.

00:04:10: Drivers naturally calibrate their speed to a road's physical design, the classic eighty-fifth percentile rule.

00:04:19: A US study across twenty two states proved that dropping limits by upto twenty miles per hour.

00:04:27: barely altered driven speeds It merely widened the gap between the sign and reality.

00:04:35: When you force speed limits below human tolerance on road design, You don't create safety!

00:04:43: You Create Speed Variance Driver Frustration Mass Non-compliance Political Backlash.

00:04:52: Real Road Safety means reengineering dangerous junctions enforcing laws against distracted driving and letting modern vehicle technology do its job.

00:05:07: Endless speed limit drops have hit a floor of public compliance because they've hit a ceiling of diminishing

00:05:14: returns.".

00:05:16: To claim that further speed limit reductions serve no good purpose is to ignore both humanity, physics.

00:05:26: We've hit a ceiling of diminishing returns, but for the pedestrian hit by two-ton SUV there is no such thing as marginal safety gain.

00:05:36: Let's dismantle the myth that physics hits a floor at twenty miles per hour.

00:05:41: Lowering speed limits shrink stopping distances and drastically softens impact severity.

00:05:47: A car travelling at thirty miles an hour requires twenty three metres to stop.

00:05:53: At twenty miles.

00:05:54: That distance is cut nearly in half to just twelve meters.

00:05:59: Those eleven metres are literally the difference between a driver stopping safely in front of a child and hitting them at full speed.

00:06:07: Globally, physics is rock solid!

00:06:10: A five percent drop in average speeds yields ten percent drops in injury crashes and twenty percent drops fatalities.

00:06:19: When US dropped into state limits to fifty-five miles per hour.

00:06:23: in nineteen seventy four Fatalities plummeted by sixteen percent in a single year, saving nine thousand lives.

00:06:32: Vehicle technology isn't a magical instant fix.

00:06:35: Sandalwood.

00:06:36: it takes up to twenty years for new tech to trickle down through the entire used car fleet.

00:06:42: We face A TODAY problem Nearly one-thousand seven hundred road deaths a year in Britain with crashes remaining leading killer of children and young adults.

00:06:54: Lowering speed limits protects people right now, in every neighbourhood whether a family can afford a brand new car with radar sensors or not.

00:07:04: Tellingly urban twenty miles per hour zones have narrowed the casualty gap between our most and least deprived areas by fourteen percent.

00:07:15: Look at actual data rather than noise.

00:07:18: In Wales, despite the political friction early casualty figures dropped by over twenty percent following the default twenty-mars per hour rollout.

00:07:27: In Edinburgh, Bristol and London citywide Twenty-Mars Per Hour Limits delivered double digit drops in deaths and serious injuries.

00:07:35: Even on the German Autobahn sections that introduced a one hundred thirty kilometres per hour limit saw fatalities drop by about twenty five percent.

00:07:45: Finally streets are for living not just driving.

00:07:49: Slower speeds reduce noise, lower local pollution and give parents the confidence to let their children walk for our own.

00:08:19: Claiming we've done enough places an arbitrary cap on human life.

00:08:24: as long as thousands die on our roads every year, lowering speed limits remains the fastest cheapest and most effective tool.

00:08:31: We have to save lives now.

00:08:35: you know sage your point about those extra eleven meters of stopping distance sounds compelling but it relies On a fantasy where drivers actually obey this sign.

00:08:47: Changing a metal plate on a pole doesn't magically warp physics if half the population simply ignores it.

00:08:55: It's not fantasy sandalwood, its measurable reality.

00:08:59: Even with partial compliance average speeds drop.

00:09:03: That small drop shrinks reaction distance and saves lives.

00:09:06: today while we wait two decades for your beloved autonomous car fleet to arrive

00:09:12: Partial compliance is a generous euphemism for lawlessness.

00:09:18: RAC data shows half of all drivers now break twenty miles per hour limits.

00:09:25: You aren't creating safer streets, you're just turning ordinary commuters into casual criminals and breeding contempt for traffic law.

00:09:36: People bristled at seatbelt mandates in nineteen eighty three two yet nobody sensible argues we should abolish them Now.

00:09:43: social norms take time to shift.

00:09:46: Besides, look at London, Edinburgh or Bristol.

00:09:49: City-wide twenty miles per hour limits yielded double digit drops in casualties.

00:09:55: The trend line isn't put off by driver grumbling

00:09:58: Except most of those casualty gains come from engineered zones with traffic calming.

00:10:05: The major DFT funded study proved sign-only twenty miles per hour limits produced no statistically significant drop in casualties.

00:10:17: Politicians use cheap signage as a substitute for actual infrastructure investment.

00:10:23: Signs are the fastest, cheapest tool we have right now but fine if you want real engineering let's build it!

00:10:32: Though I suspect the moment we install speed humps or roundabouts on your commute, you'll complain about poor use of tax money and travel delays.

00:11:02: They had to start rolling back arterial roads in twenty-twenty five because the blanket approach was absurd.

00:11:31: It's not justice if it is a policy running on empty.

00:11:36: UK road deaths have flatlined at around one thousand six hundred since twenty ten, despite endless speed limit drops.

00:11:46: We've hit the floor of public compliance because we've hit this ceiling of diminishing returns.

00:11:53: That one-thousand six hundred plateau Is precisely why can't give up.

00:11:58: Traditional vehicle safety gains have leveled off.

00:12:01: Lowering speeds remains our most direct lever to break that plateau and protect vulnerable pedestrians.

00:12:08: The lever is not connected.

00:12:10: the accelerator pedal sage.

00:12:13: Real safety lies in modern vehicle tech, fixing dangerous junctions And targeting impaired drivers Not endlessly lowering.

00:12:23: a numbers on posts.

00:12:35: If you enjoyed this video, please give it a thumbs up.

00:12:38: It really helps our channel out

00:12:40: For more content like this every week.

00:12:42: hit that subscribe button and turn on notifications So you never miss an upload.

00:12:48: Thanks for watching.

00:12:49: see you next time.