"Mike Hughes" wrote in message
...
In article , Craig Holl
writes
Mike Hughes wrote:
Try this site to see what happens to traffic when one incident slows
vehicles down.

http://vwisb7.vkw.tu-dresden.de/~tre.../simFrame.html

A couple questions:

- Is the stop light scenario only supposed to change from red to green
once?

Yes, as far as I am aware. It shows what happens further along the road,
even though the previous cause of a hold up has long gone.

- What is the ramp p_ factor and the delta b ramp?

I reckoned that the p_factor is related to the reluctance of drivers to
enter the main stream of traffic (i.e. how "scared" they are!), and the
delta b ramp is the difference between the acceleration of the cars from the
ramp onto the motorway, and the velocity of the main stream of traffic?

Don't know for sure, but it seems to be something to do with the speed
at which vehicles can join.

I just play with this site I had nothing to do with it otherwise (but it
can be a little bit addictive!)



--
Mike Hughes, a Brighton *licensed* taxi driver.
At home in Tarring, Worthing, West Sussex, England

Need a taxi from Brighton Worthing Gatwick or Heathrow - please visit this
site
www.gatwick-taxi.com