segunda-feira, 29 de agosto de 2016

"any size traffic jam can be triggered by even the smallest disturbance, such as one car getting too close to the car in front and braking sharply. Nobody ever hits anybody, there is no obvious cause visible to most of the people involved (and the car that did cause the jam has probably sped off into the distance, its driver unaware of what is happening behind), but hundreds of people may be inconvenienced.
if the density of traffic increases, it can be kept flowing more freely by limiting its top speed, because this reduces the impact of the difference between the time taken to accelerate and the time taken to brake. It really is true that if everyone keeps velocity under speed limits on crowded motorways they all will get to their destination sooner that if they try to drive faster."

p.149 in "Deep Simplicity: chaos, complexity and the emergence of life"
by John Gribbin and Mary Gribbin

Sem comentários:

outros dias do caderno