Originally Posted by
Duncan74
And that's where my clarification in post 37 about incentives come in.
I can't quite see how incentives addresses the issue of extra cost/resource use?
Originally Posted by
Duncan74
However the costs of incorporating all the safety features in all cars at time of manufacture is making the cost / resources at build minimal.
Minimal on a global scale with unrestricted population growth will still have a major impact on the environment.
Originally Posted by
Duncan74
The challenge in NZ is the length of time it takes for that to filter through. Mean age of cars is over 11 years in NZ compared to 5 in most of western europe. Not sure of the USA. So I'm keen that there is a way to incentivise the renewal of the fleet.
I'm actually in favour of an older fleet. The older the fleet the better it is for the environment (emissions improvements not withstanding).
Originally Posted by
Duncan74
Yeah, I did admit there were logical holes here ;-) However there are some functional positves with bikes, including parking space, energy use, congestion in terms of what 'policy' considerations are likely to focus on. The 'it's just fun' is also a huge factor for those registered here, possibly less so on a national policy basis.
Agreed.
Originally Posted by
Duncan74
No, study as you stated concluded a driver was less likely to have a crash. Not that they were safer.
Point well made. Slip of the wording here as that's what I meant.
Originally Posted by
Duncan74
If I was hit by a distracted driver at 50 then I've a chance of living. Hit by an attentive driver at 80 then there's bugger all chance.
If you were hit at those speeds then I totally agree. The point is that the attentive 80kph driver is likely to hit you at a lower speed than the distracted 50kph driver that doesn't brake at all.
Originally Posted by
Duncan74
Apologies below is in MPH not KPH. But looking at 30/50mph as proxy for 50/80kph then you can see that to stop in the same distance the driver at 50kph has six times the thinking time. That's a huge difference. (0.65s to 3.9seconds).
All the thinking time in the world is of no use if the driver is blithely unaware that there's a problem.
Originally Posted by
Duncan74
the solution to me is to focus on encouraging attention through removing distractions (eg mobiles), better streetscape design (rationalising roadsigns, avoiding visual distractions such as advertising), etc. I don't see using increasing risk as the mechanism for improving attention as that logically only brings you back to the same risk point you started at at best.
I can see the logic to this as well. Some mix of the two is probably the answer. If you remove too many "challenges" on the road drivers will just go to sleep. I agree that too many is not good either.
Originally Posted by
Duncan74
Sadly there is then the pressure to overtake,
I do wonder how much of this is the thinking that "that shit-head is driving under the speed limit". Remove the speed limit and you remove this "target" to measure others by. I would like to think that then faster drivers would be more tolerant towards the slower ones.
Originally Posted by
Duncan74
Nope. Simply then with a 2 second safe gap between vehicles then the capacity of any road is about 1800 vehicles per lane per hour regardless of speed (3600/2).
I have seen quotes from roading engineers that state that the higher the speed the more cars per lane per hour. My rough calculations have born this out (taking into account the increased gap to maintain 2seconds).
Originally Posted by
Duncan74
the use of active speed limits that drop to 80, or even lower in heavy traffic conditions work, people weave less and so you can get more traffic though.
There is a section of the Auckland motorway that is currently reduced to 80kph due to road works (that are off the motorway). I travel through there every morning and I can tell you from personal experience that this is a massive bottle-neck. Free flowing at 100kph before it and even freer after it due to the cars trapped in it.
Originally Posted by
Duncan74
even if the angle changes then clearly the outcome of that crash is worse for all types of user at higher speeds.
If you are comparing the same impact angle at different speed then I agree. What I'm saying is that at the same speed the impact angle is a strong factor in survivability.
"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin (1706-90)
"I would rather be exposed to the inconveniences attending to much liberty than those attending too small a degree of it." - Thomas Jefferson (1743-1826)
"Motorcycling is not inherently dangerous. It is, however, EXTREMELY unforgiving of inattention, ignorance, incompetence and stupidity!" - Anonymous
"Live to Ride, Ride to Live"
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