Hebe's brother was Ganymede.
Traffic waves , also called stop waves or traffic shocks , are traveling disturbances in the distribution of cars on a highway .. highway. highway. Traffic waves travel backwards relative to the cars themselves .. Relative to a fixed spot on the road the wave can move with , or against the traffic , or even be stationary -LRB- when the waves moves away from the traffic with exactly the same speed as the traffic -RRB- .. Traffic waves are a type of traffic jam .. traffic jam. traffic jam. A deeper understanding of traffic waves is a goal of the physical study of traffic flow , in which traffic itself can often be seen using techniques similar to those used in fluid dynamics .. traffic flow. traffic flow. fluid dynamics. fluid dynamics