[Tagging] Track grades
Bryce Nesbitt
bryce2 at obviously.com
Thu Jul 10 18:57:15 UTC 2014
On Tue, Jul 8, 2014 at 12:00 PM, Jesse Crawford <jesse at jbcrawford.us> wrote:
>
> As a second but similar question, off-highway vehicles are a popular
> pasttime here and there are many tracks intended for ATVs or dirtbikes, not
> wide enough for SUVs. Is there a best practice for tagging these types of
> paths?
>
I have the same question, having just visited a region with numerous ranch
"roads" exactly the width of the tires on an ATV,
but too narrow for a regular car or truck. Tagging these with
*highway=track* would be misleading, as would *highway=path*.
An ATV has a track width of about 30 inches (from wheel to wheel).
The three common dirt road widths around here are:
car sized, ATV sized, motorcycle sized.
---
Also many many "4wd" roads are perfectly passable by 2wd passenger cars
during good weather. The issue that stops
a 2wd car is during dry weather is a need for "high clearance" or the
presence of deep sand. In determining the passibility of a road
the important characteristics seem to be:
- Width [minimum]
- Surface firmness (mud, gravel, sand) [typical & worst case]
- Clearance required (rutting, jutting rocks) [typical & worst case].
- Snow accumulation [season]
I've taken a low clearance 2wd car on many a 4wd road. But not in bad
weather. And not all 4wd roads due to either clearance or surface type.
There are no hard lines here: it depends on the skill of the driver, the
speed, the willingness to move rocks out of the way, and the season.
A high clearance 2wd car, with a skilled driver, can tackle almost anything
that resembles a road.
Often a short statement makes the road condition clear: description=Snow
into early July or so. Deep ruts form in winter, but are generally graded
smooth in early spring.
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