What if somebody merges from the side of the road into traffic? That might force traffic to slow down to accommodate the vehicle and slowing down changes how the model works. Associate Professor Allison Kealy More Quotes by Associate Professor Allison Kealy More Quotes From Associate Professor Allison Kealy If some people drive 30km/h to get green waves while others just drive as fast as they can to get to the traffic lights, that in itself can cause a build up of traffic and cause more dangerous conditions, you need everyone on the road to buy into the application. Associate Professor Allison Kealy latest-headlines