Traffic simulation

iansoady · 01-01-10, 12:10

I stumbled across this which shows the simulated effects of vehicles joining roads, hills, merges etc. Fascinating and provides hours of harmless fun......

burty · 01-01-10, 12:31

Interesting. Curious to watch/play with. I love some of the controls "Politeness Factor"

The Spin Doctor · 03-01-10, 20:54

It is interesting - it's noticable that simply removing the conditions that caused congestion doesn't always cause the congestion to go away...

saga_lout · 03-01-10, 23:44

It's interesting but not particularly realistic. For example, in the "lane closing" simulation, once you cause a jam the blocked lane hardly moves when we all know that the blocked lane moves faster than the clear lane.

Yambo · 10-01-10, 15:07

When I was at LCC the ~~control freaks~~ traffic signals planners had a computer modelling programme which was very good; I've seen the end result and the models were very accurate.

I wanted to use the modelling on a scheme I was doing, a big roundabout. However, to set the thing up properly I would have needed a weeks worth of traffic count and speed figures for all approaches and the roundabout itself, a weeks worth of video from about 5 different places and a couple of days of people sitting at strategic places around the roundabout doing an origin and destination study. I didn't have the money available for all of that so no modelling, which was a both a shame and a good thing. My scheme caused a lot of queueing which maybe could have been avoided but the queueing also meant the HA took over and did what we wanted to really do but couldn't afford.

Like most programs, modelling is dependent on good data and rubbish in, rubbish out.

Horse · 10-01-10, 19:14

Quote:

Originally Posted by saga_lout

It's interesting but not particularly realistic. For example, in the "lane closing" simulation, once you cause a jam the blocked lane hardly moves when we all know that the blocked lane moves faster than the clear lane.

Couldn't find it on the web the last time I searched, but there used to a be a site with an article comparing traffic merging at M-way junctions with turbulent flow analysis of liquids where two pipes join.

Suggesting was that you get the initial turbulence as traffic joins, then a bit later a further 'sort out' as other people change to the lane they really want to be in - suggestion was about 1 mile later.

Afterdark · 26-01-10, 22:37

oh cool I can play god.

I do like the 'lane changes' one, the politeness factor slider amuses me

01-01-10, 12:10	#1
iansoady A Bit Bored Join Date: Feb 2008 Location: Birmingham Posts: 195 Casino cash: £662900 Thanks: 3 Thanked: 12/11	Traffic simulation I stumbled across this which shows the simulated effects of vehicles joining roads, hills, merges etc. Fascinating and provides hours of harmless fun......
	Ian. 2004 Triumph Tiger 955i 1955 Velocette Viper/Venom 1958 NSU Quickly......

01-01-10, 12:31	#2
burty At Work Join Date: Jan 2009 Location: Medway Taahns Innit Posts: 1,043 Casino cash: £994300 Thanks: 8 Thanked: 28/25	Re: Traffic simulation Interesting. Curious to watch/play with. I love some of the controls "Politeness Factor"

03-01-10, 20:54	#3
The Spin Doctor May contain nuts Join Date: Jan 2008 Location: Kent, but also train in Oxford Posts: 3,504 Casino cash: £1928185 Thanks: 52 Thanked: 122/96	Re: Traffic simulation It is interesting - it's noticable that simply removing the conditions that caused congestion doesn't always cause the congestion to go away...
	Sponsor Page Blog Website Courses booking now for 2010 Riding Tips Shop Follow me on Twitter NEW - online e-course The dull copyright bit - feel free to nick it for personal use. If you want to reprint it for your club, I'd like a mention as author. Otherwise hands-off. Full terms "Force has no place where there is need of skill" Herodotus 450BC

03-01-10, 23:44	#4
saga_lout Grumpy Old Git Join Date: Jan 2008 Location: Exiled in Essex Posts: 3,434 Casino cash: £1837620 Thanks: 22 Thanked: 66/64	Re: Traffic simulation It's interesting but not particularly realistic. For example, in the "lane closing" simulation, once you cause a jam the blocked lane hardly moves when we all know that the blocked lane moves faster than the clear lane.
	Calling Atheism a religion is like calling bald a hair color. Don Hirschberg

10-01-10, 15:07	#5
Yambo Probably wrong Join Date: Jan 2008 Location: Lancashire Posts: 2,370 Casino cash: £506000 Blog Entries: 7 Thanks: 15 Thanked: 14/13	Re: Traffic simulation When I was at LCC the ~~control freaks~~ traffic signals planners had a computer modelling programme which was very good; I've seen the end result and the models were very accurate. I wanted to use the modelling on a scheme I was doing, a big roundabout. However, to set the thing up properly I would have needed a weeks worth of traffic count and speed figures for all approaches and the roundabout itself, a weeks worth of video from about 5 different places and a couple of days of people sitting at strategic places around the roundabout doing an origin and destination study. I didn't have the money available for all of that so no modelling, which was a both a shame and a good thing. My scheme caused a lot of queueing which maybe could have been avoided but the queueing also meant the HA took over and did what we wanted to really do but couldn't afford. Like most programs, modelling is dependent on good data and rubbish in, rubbish out.

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26-01-10, 22:37	#7
Afterdark A Bit Bored Join Date: Jan 2010 Posts: 9 Casino cash: £100 Thanks: 0 Thanked: 0/0	Re: Traffic simulation oh cool I can play god. I do like the 'lane changes' one, the politeness factor slider amuses me

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Traffic simulation

I stumbled across this which shows the simulated effects of vehicles joining roads, hills, merges etc. Fascinating and provides hours of harmless fun.........