"Matt B" <
[email protected]> wrote
> DavidR wrote:
>> "Matt B" <[email protected]> wrote
>>> spindrift wrote:
>>>
>>> It hardly shows cyclists in a good light, safety wise, compared to
>>> motorists, does it.
>>>
>>>> Figures covering the years 2001-05, provided to CTC by TfL (on the day
>>>> that "Share the Road" was launched), show that a pedestrian in London
>>>> is over 100 times more likely to be injured in collision with a motor
>>>> vehicle than a cycle.
>>> Given that motor vehicles do about 125 times as many vehicle kilometres
>>> as bikes do (RCGB), that suggests that bikes injure 25% more
>>> pedestrians
>>> per vehicle kilometre than motor vehicles do.
>>
>> So people keep saying. Except they are not *equivalent* kilometres.
>
> 1km = 1km.
1km with few pedestrians != 1km with lots of pedestrians.
>> If you counter by saying that the pedestrian casualty rate is the same
per
>> vehicle kilometre on motorways as towns, think of the proportion of
>> pedestrians that are NOT harmed on motorways compared to towns.
>
> You have a good point, similar to the one I've been accused (by many
> here) of trolling over for years. If we can provide motorways for all
> motor vehicle (cars, trucks, and buses) inter-city journeys our A, B, C,
> and D roads, and our urban streets, will be a whole lot safer for
> cyclists, pedestrians, equestrians, and local motor traffic (and less
> congested).
Not necessarily. Snarl ups are good for road safety.
The French publish a good breakdown of casualties by department. I don't
know if there is a British equivalent but it illustrates the point of
"non-equivalent" km very well. Where are road users at greater risk? In the
dense urban areas or the open countryside?
In central Paris, the distance travelled by vehicles is just 86m km per
pedestrian fatality. In Haute Corse it is 340m km. Both are below national
average of 460m km/fatal.
So Paris is pretty awful isn't it?
Or is it?
Now, consider it in population terms. In Paris, there are 15 ped fatals
per 1m head of population (which is near the national average). In Haute
Corse there where 21 per 1m head in 2001 and 42 in 2002 (but given the
totals were 3 and 6, we can forgive such a statistical blip).
Of the 20 most densely populated departments in 2001, 14 were below
national average. Of the 20 least dense departments, 12 were above national
average. Although three of those departments recorded no casualties in
2002, the pattern was similar to the year before.
If you were a French traffic engineer considering pedestrian safety by
vehicle distance alone you would be out by a factor of 10.
On a related note, the stats also seem to show that injuries to vehicle
occupants are not distance related either. Only occupant fatals show a
link.