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jomukuk
PostPosted: Wed Sep 09, 2009 15:24 
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They rise fast, very. From fully retracted to fully deployed in [in many cases] under 4 seconds.
http://www.atgaccess.com/getdoc/4c4f7b5f-4f1d-457e-8cd7-a3bb43517175/VP200-%281%29.aspx
Note:
Quote:
Other loops such as approach loops are installed to send information to the system, this is dependant on the way the client wants the system to operate.

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56 years after it was decided it was needed, the Bedford Bypass is nearing completion. The last single carriageway length of it.We have the most photogenic mayor though, always being photographed doing nothing
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Steve
PostPosted: Wed Sep 09, 2009 17:11 
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dcbwhaley wrote:
... and a very obvious warning that they are about to do so, as at level crossings.

At level crossings you see the gate coming down; no other warning can be as obvious as that. I've seen amber/red gamblers, but I've never seen a gate gambler.

dcbwhaley wrote:
One solution would be for there to be a delay before the bollards rise [...] Another would be for drivers to leave a sensibly gap between them and the vehicle in front :)

True, but you can't have both otherwise you're back at square 1. The rise must be quick, immediate and obvious to the driver.

At low speeds, a sensible gap can be quite small:
Total stopping distance at 25mph = 17m, for which a gap of > 1.5 seconds is required to ensure non-contact (assuming a sudden brick wall, 0.67s, 0.67G).

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weepej
PostPosted: Wed Sep 09, 2009 22:46 
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dcbwhaley wrote:
Another would be for drivers to leave a sensibly gap between them and the vehicle in front :)


At least two of the drivers we see on the video have purposfully not left a gap in front because they think they can beat the bollard.

Perhaps the buses should stop straight after they pass the bollard with no room behind them whilst the bollard raises.

Bit of a pain to have to do this because of a few idiots, but pretty much everything boring we have to do in life is down to idiotic and selfish behaviour of a small minority.
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anton
PostPosted: Thu Sep 10, 2009 06:59 
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as vindictive bollards seam acceptable to some why not install a colt 45 and try to shoot out the sump of each tailgating vehicle? Safety is not important if you are a council.

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Speed limit sign radio interview. TV Snap Unhappy
“It has never been the rule in this country – I hope it never will be - that suspected criminal offences must automatically be the subject of prosecution” He added that there should be a prosecution: “wherever it appears that the offence or the circumstances of its commission is or are of such a character that a prosecution in respect thereof is required in the public interest”
This approach has been endorsed by Attorney General ever since 1951. CPS Code
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jomukuk
PostPosted: Thu Sep 10, 2009 08:38 
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The idea of "state indicators" (rising/falling/both) seems good: Until.....

Quote:
2.2.1 Rising bollard systems should have a method of directing authorised users
when to proceed when negotiating a bollard controlled access point. It is
recommended that all bollard installations provide "indicators" advising
authorised road users of the bollard status i.e. whether the bollard is fully
retracted, fully raised or in the process of lowering or raising (see section 5:
Basic System Components and Section 10: Signing). ****However, no indicators
for this use are prescribed in the Traffic Signs Regulations and General
Directions 2001***** Therefore, if indicators are used, they require authorisation by
the Department for Transport or by the appropriate national authority


Oh well...

Another good read:

http://www.atgaccess.com/PDFS/LARBUGguide-DRAFT.aspx

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The world runs on oil, period. No other substance can compete when it comes to energy density, flexibility, ease of handling, ease of transportation. If oil didn’t exist we would have to invent it.”

56 years after it was decided it was needed, the Bedford Bypass is nearing completion. The last single carriageway length of it.We have the most photogenic mayor though, always being photographed doing nothing
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Big Tone
PostPosted: Thu Sep 10, 2009 09:17 
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Sort of on topic I hope… I sometimes wonder if there’s not something in our psyche which just hates being told what to do even if it’s for our own good. I was behind a lorry this morning and saw a sign on the rear which I hadn’t seen before on any other HGV. What you can’t see from it was what happened a moment before when a cyclist went on the inside as the lorry was, (you guessed it), making a left turn….

Image

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You will be branded a threat to society by going over a speed limit where it is safe to do so, and suffer the consequences of your actions in a way criminals do not, more so than someone who is a real threat to our society.
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