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Speed Limits

By harvyk1 - 19 December 2008 67

I was driving along the parkway today when I got to the Glenloch interchange. Now I’ve just been driving along a section which is fine for 100km/h, when I went onto the GDE, which is now 80, had I gone right and gone down Parkes Way it’d be 90.

Considering that most other states and territories have 110km/h zones (the NT even has 130km/h zones), why is anything over 100km/h considered absolutely dangerous, even on duel carriage ways no where near houses, and can anyone honestly tell me that the random choices of speed limits is anything other than random speed traps designed for catching unwary drivers.

The other thing I noticed was that the Glenloch interchange, which is only single lanes for most of it all slows down to 80 around the interchange only, and yet had it been built in any other city it’d be at least 100, if not 110, and there’d be at least an additional lane (if not 3 or more) to deal with.

What’s Your opinion?


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67 Responses to
Speed Limits
1
deye 4:15 pm
19 Dec 08
#

One of the sillier things about living here is the stupidity of some of the speed limits. My other favourite bubgear for speedlimits is the Mondaro highway, particularly the wide four lane divided road with no on/off ramps at the Northern end set to 80 that seems to only be that way so that the police can get some practice with the handheld radar guns halfway along. That should be at least 100, even 110 would be okay. Heck the single lane bit across the bridge at 80 is better quality than a lot of country roads that are 100.

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2
deye 4:16 pm
19 Dec 08
#

oh and as for putting that traffic light in front of the jail, what a pain in the butt.

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3
chewy14 4:18 pm
19 Dec 08
#

The new Glenloch Interchange is a dangerous place to be, especially coming from the south. Drivers try to change lanes too late at the turn off to Belconnen as well as the Gungahlin-City split. I have seen two accidents there since the new Interchange was opened and it is poorly designed.
As for the speed limits on the GDE proper (not wanting to start anything), but i think the bike lane and the merges are the reason it is only 80 and not 100.

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4
niftydog 4:33 pm
19 Dec 08
#

…duel carriage…

Ooh, sounds exciting, and kinda dangerous, in an old-timey way. 😉

The short answer about the interchange is obvious, poor design and insufficient funds. But once you’re through there it seems odd that the GDE isn’t at least 90km/h like the other connecting roads, but most people tend to drive that speed anyway.

chewy, William Hovell Drive has a bike lane and it’s 90km/h.

As for speeds greater than 100km/h, I have a recollection of the ACT road rules defining a max speed of 100km/h. That’s why the highway out of town doesn’t go to 110 until past the border.

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5
iamspam 4:43 pm
19 Dec 08
#

A heavily trafficked urban road is different to open stretches on the Hume, where 110 is okay. Even in Sydney, most motorways drop down to 90km/h or less as you get closer in. And frankly, I wouldn’t want to be doing much more than that when there’s dense morning traffic.

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6
deye 4:59 pm
19 Dec 08
#

heavily tracked ? maybe for an hour or two each day and then the amount of traffic regulates the speed.

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7
nexus6 5:06 pm
19 Dec 08
#

given the shite driving i continually see everywhere in canberra im happy to cap it at 100

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8
cranky 5:29 pm
19 Dec 08
#

My gripe is the 80K limit on the Monaro south of the Mugga Lane intersection. The camera to the north of the Rose Cottage roundabout must be the most profitable in the Territory.

This is dual lane, with slip lanes to the roundabout. If the Monaro south of Canberra Ave
(and heading south) can be 100K with the slip lane up to Hindmarsh reduced to 80K (perfectly sensible), why is the 80K limit applied to a longer straight stretch in a lower traffic area on the same road. The speed limit does increase to 100K’s after the roundabout.

I have always believed that speed limits were indicated by the 80 percentile speed of traffic. The speed travelled by 80 percent of the traffic – adjusting for stupid high and low speeds by nongs.

Will we be made privy to the profitability of the various fixed speed cameras? It would be a valid indication of the accuracy of the speed limit set.

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9
JC 6:22 pm
19 Dec 08
#

deye said :

heavily tracked ? maybe for an hour or two each day and then the amount of traffic regulates the speed.

Doesn’t matter if it is for 2 hours a day or all day, unless you have a variable speed limit systemm.

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10
54-11 6:22 pm
19 Dec 08
#

Cranky, you’re on the right track about the safest speed limits being around the 80th percentile – research shows that it’s actually the 85th perecntile that is the safest “for most roads”. There are some exceptions where, as pointed out above, there are particular circumstances. We seem to have moved well below that point, to somewhere around the 50% mark. Why?

This has coincided with the introduction of speed cameras, which produce little or no revenue unless speed limits are kept artifically low. This is real dumbing down, which reduces safety, for a variety of reasons. It also contributes to congestion, as vehicles are travelling slower than they should be.

Dumb, dumb, dumb.

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11
vandam 6:41 pm
19 Dec 08
#

Ok here’s your answer……

The GDE has various pieces of junk otherwise known as art to the ACT Govt. Now in order to appreciate this art you need to go 10kph slower than Parkes Way.

I’m sure if you ask the Govt to put art on Parkes way they will reduce the speed on that one too.

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12
Holden Caulfield 9:09 pm
19 Dec 08
#

nexus6 said :

given the shite driving i continually see everywhere in canberra im happy to cap it at 100

Shite driving is shite driving, speed limits don’t really contribute to that.

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13
harvyk1 9:18 pm
19 Dec 08
#

iamspam said :

A heavily trafficked urban road is different to open stretches on the Hume, where 110 is okay. Even in Sydney, most motorways drop down to 90km/h or less as you get closer in. And frankly, I wouldn’t want to be doing much more than that when there’s dense morning traffic.

Even in Sydney, most motorways are 110, until it starts to get into Sydney proper. By that stage the houses fenceline is made up of sound barrier, and lets face it, with exception to 3am those sections you can rarely do 80 let alone 110 thanks to the heavy traffic.

Canberra has good roads (ignoring GDE), which with exception to a couple of hours each day they are dead by any major cities standards, and yet they set the limits at very low speeds. (eg 80, where most other cities would have the limit at 110.)

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14
Aeek 10:11 pm
19 Dec 08
#

Memories, I got to cause havoc in the old Glenoch by doing 90, the legal limit, everyone else was doing 80 or 100.

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15
AstralPlane 11:40 pm
19 Dec 08
#

There is a whole lot more to it than whether you reckon you can drive safely at 110 through Glenloch.

For example, have a noodle round here: http://www.monash.edu.au/muarc/

There you will find actual evidence about the relationship between speed and death/injury. Generally, the short of it is lower speeds result in many less accidents with a pretty low impact on travel time.

Sure, maybe you’re a hot driver. Maybe you’re on you’re still on your P plates but you really are genuinely a great driver. But lots of other people are not hot drivers. So, in the interests of the greater good we keep the limits down. A few minutes extra travel time is the only downside you wear to prevent people from dying. Not such a big ask is it?

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