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Road Tolls 2018



 
 
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  #1  
Old December 29th 17, 09:56 PM posted to uk.rec.cycling
Simon Jester
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Posts: 1,575
Default Road Tolls 2018


Road damage is 4th power of axle loading.
A 1000kg car causes 100 000 times as much damage as a 10kg primary vehicle.
If primary vehicle users pay 1p per mile, moronists must pay £10 per mile.
Sounds fair to me.

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  #2  
Old December 30th 17, 09:51 AM posted to uk.rec.cycling
Rob Morley
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Posts: 7,089
Default Road Tolls 2018

On Fri, 29 Dec 2017 13:56:23 -0800 (PST)
Simon Jester wrote:

Road damage is 4th power of axle loading.
A 1000kg car causes 100 000 times as much damage as a 10kg primary
vehicle. If primary vehicle users pay 1p per mile, moronists must pay
£10 per mile. Sounds fair to me.

ITYF it's gross axle weight that matters. I'm not sure how the
calculation varies with pressure at the road surface - me on a bike
with 20mm tyres at 140PSI probably exerts a higher pressure than a small
car. Of course it seems the calculation ignores the existence of
single track vehicles anyway, otherwise they'd be considering wheel
loading rather than axle loading. I'm pretty sure that they should be
considering pressure along with weight though - a LGP vehicle can do
less damage to delicate heathland than an inconsiderately ridden
mountain bike, and I imagine that similarly applies to road structures.

  #3  
Old December 30th 17, 10:17 AM posted to uk.rec.cycling
Simon Jester
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Posts: 1,575
Default Road Tolls 2018

On Saturday, December 30, 2017 at 9:51:11 AM UTC, Rob Morley wrote:
On Fri, 29 Dec 2017 13:56:23 -0800 (PST)
Simon Jester wrote:

Road damage is 4th power of axle loading.
A 1000kg car causes 100 000 times as much damage as a 10kg primary
vehicle. If primary vehicle users pay 1p per mile, moronists must pay
£10 per mile. Sounds fair to me.

ITYF it's gross axle weight that matters. I'm not sure how the
calculation varies with pressure at the road surface - me on a bike
with 20mm tyres at 140PSI probably exerts a higher pressure than a small
car. Of course it seems the calculation ignores the existence of
single track vehicles anyway, otherwise they'd be considering wheel
loading rather than axle loading. I'm pretty sure that they should be
considering pressure along with weight though - a LGP vehicle can do
less damage to delicate heathland than an inconsiderately ridden
mountain bike, and I imagine that similarly applies to road structures.


http://www.nvfnorden.org/lisalib/get...spx?itemid=601

  #4  
Old December 30th 17, 02:01 PM posted to uk.rec.cycling
TMS320
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Posts: 2,141
Default Road Tolls 2018

On 30/12/17 09:51, Rob Morley wrote:
On Fri, 29 Dec 2017 13:56:23 -0800 (PST) Simon Jester
wrote:

Road damage is 4th power of axle loading. A 1000kg car causes 100
000 times as much damage as a 10kg primary vehicle. If primary
vehicle users pay 1p per mile, moronists must pay £10 per mile.
Sounds fair to me.

ITYF it's gross axle weight that matters. I'm not sure how the
calculation varies with pressure at the road surface - me on a bike
with 20mm tyres at 140PSI probably exerts a higher pressure than a
small car. Of course it seems the calculation ignores the existence
of single track vehicles anyway, otherwise they'd be considering
wheel loading rather than axle loading. I'm pretty sure that they
should be considering pressure along with weight though -


It's not a matter of considering bicycles and motor vehicles as objects
delicately placed on the road surface and then left alone - tyre
pressures are utterly insignificant compared to the static load bearing
capacity of road materials. Vehicles are moving along, producing cyclic
effects deep under the surface and it is this that really matters.

From observation, I suggest the road surface (I assume we are talking
about the finishing layer of gravel bound by tarmac or asphalt) usually
only seems to fail when it becomes unstuck or the structure underneath
has failed; it also seems to me that surface erosion is mostly due to
tyre scrub.

a LGP vehicle can do less damage to delicate heathland than an
inconsiderately ridden mountain bike, and I imagine that similarly
applies to road structures.


Depends on whether the damage you are considering is just visual damage,
at the surface, or down amongst the roots. On a muddy track, it is usual
for a motor vehicle to produce deeper/wider ruts than a mountain bike.
On a dry, dusty track, it is usual for a motor vehicle to throw up
bigger clouds of dust than a bike (with any kind of tyre).

  #5  
Old January 1st 18, 06:20 PM posted to uk.rec.cycling
Simon Jester
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Posts: 1,575
Default Road Tolls 2018

On Monday, January 1, 2018 at 5:31:44 PM UTC, Colonel Edmund J. Burke wrote:
On 12/29/2017 1:56 PM, Simon Jester wrote:

Road damage is 4th power of axle loading.
A 1000kg car causes 100 000 times as much damage as a 10kg primary vehicle.
If primary vehicle users pay 1p per mile, moronists must pay £10 per mile.
Sounds fair to me.


You sound like an axle to me, limey.


I don't normally reply to your pathetic trolls but I regard 'Limey' as a compliment.
It shows the British Navy were intelligent enough to realise sailors needed vit-C to prevent scurvy.

 




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