August 13, 2003
The M25 variable speed limits might actually work
For ages I've wondered whether my attempts to smooth out traffic flow in jams actually improve matters at all. I do it as much because I'd rather maintain a constant speed as an attempt to reduce the jam, but I always thought it'd be a nice little project to write some simulation to show people that although the maximum speed would be lower, trying to keep to an average speed would have a much higher minimum speed (i.e. not stopped :-) and we'd all get there a lot quicker.
From Critical Section today, I found that someone else has already done a load more analysis than I'll ever get round to in SCIENCE HOBBYIST: Traffic Waves, physics for bored commuters. And he reckons that I'm right.
Plus there's a link to this cool traffic simulator which lets you see what happens in different scenarios with different speed limits, and traffic densities, etc.
So leave gaps, and destroy build-ups of traffic with anti-traffic!Posted by Adrian at August 13, 2003 01:42 PM | TrackBack
This blog post is on the personal blog of Adrian McEwen. If you want to hire my company to help you with the Internet of Things then get in touch. If you want to learn more about the Internet of Things, my book Designing the Internet of Things is available to pre-order (amazon.co.uk amazon.com), or if you just want a beautiful IoT device, I'm CTO of Good Night Lamp.