Speed Cameras

If you can't understand that the output from a speedo, the speed
indicated, is in linear proportion to the input, the rate of rotation of
the wheels, I don't hold much hope for you designing anything more
complex without outside help.

 

Well as long as they measure 75 when I'm doing 104, where's the problem?

 

That's not quite right. It's right within about 10%.

 

The same technology is used to land space ships on the Moon too. It all
depends on how you use it, yeah?

 

You get to guess which one is the scientific instrument.
--
Toby
quidquid latine dictum
sit, altum viditur
Warning: All posts to be treated with a grain of salt.
By Order
K.K.

 

Johnno is of the opinion:

But you have to glance at it regularly to ensure your speed isn't varying,
because it doesn't take much increase from 60 to get you flashed. There's
also a lot more analysis required of a speedo, IMO, because it's not a
"car there / car not there" look, it's "am I doing the correct speed? I'm
under, by how much, feed more pedal / I'm over, by how much, less pedal" and
that sort of thing.

Roughly, yes, but small changes over a longish period of time aren't that
unlikely. Can you set your car's speed to 60km/h precisely, drive for a
minute, and check again and it's still on exactly 60? If so, you're a far
better driver than I'll ever be. I've never ended up with major speed
differences, but I regularly drift by 5-10km/h over the course of a couple
of minutes of driving - sometimes faster, sometimes slower.

Oooh, you've got to come driving down here (Wollongong). Every speed camera
around here is a virtual traffic jam, as everyone slows to (at most) 70km/h
to go through an 80km/h camera, and usually about 40km/h for 60km/h cameras.
I try to avoid driving through speed camera sites not because I'm worried
about getting booked, but because of the clog in traffic.

- Matt

 

To this, I say:

1. Like mirrors, you only GLANCE at your speedo, not stare at it.
2. Surely drivers should be able to maintain a speed.

Most people do not slow to 20-30 km/h under the limit due to speed cameras.

While there's seldom an excuse for travelling at a significant speed under
the limit (and hence obstructing the flow of traffic), it's not really
relevant to the speed camera issue.

J.

 

Indication would have been close to speed of faster "target" plus
the difference of speeds between the targets.

 

The trailers aren't privately owned... not around here. They're
supposed to (dis)inform drivers about the accuracy of their
speedometers, providing a "speedo check".

 

They tell you you're doing 75 when you're doing 104.

So you go 25 km/h faster in a 100 zone because your speedo is
"obviously stuffed".

 

Only as much as I use the "same technology" to cook a chicken.

ISTR that you were previously educated as to the claim about the
"same technology is used to land space ships on the Moon".

It was *NEVER*.

 

Can't do that. I can't see any speed on the dial between 40 and 140
without moving my head.

Minimum speed permitted 80...
Maximum speed permitted 100...

Allow for +-10% speedometer error means that you have to maintain an
indicated speed of between 88 and 91 km/h... and if the errors stack
up in the wrong direction as when you're changing lanes, you could
still get done for "speeding".

 

OK then, have it your way, make it a list of cases where the prosecution
gained a successful conviction based on the use of evidence provided by
publicly owned trailer mounted "speedo check" technology.

Nev..

 

Since when, is there a "minimum speed permitted" sign.?


Spooky

 

About 1987.

It's the LAW. Minimum permitted speed on Freeway if conditions allow.

 

you can be fined for driving too slowly, it's at the cop's discretion

 

i haven't heard that one

 

In aus.motorcycles on Sun, 23 May 2004 13:50:37 +1000

It's only the law in WA.

Elsewhere you can't go so slow as to be an obstruction, but that's got
to be *very* slow, like maybe 50kmh on a 100kmh road.

Zebee

 

Anything much more than 30km/h less than prevailing speeds is a
crash looking for a place to happen.

 

In aus.motorcycles on Sun, 23 May 2004 19:13:54 +0800

Tell that to trucks going up hill....

Zebee