Abstract: A system for encoding, multiplexing and transmitting traffic congestion data is disclosed. The invention utilizes a master display map on which traffic conditions are represented by condition indicators. A similar, smaller-scale map and indicator display is carried by individuals and in vehicles, reproduces the information appearing on the master map.

Abstract: Electronic athletic equipment is provided by installing one or more force sensors beneath selected strings loops which secure a string bed to a racquet, or the like. The string loops are selected to correspond with strings defining a target area within the string bed. When a movable game element impacts the target area, the force sensors are activated by pressure exerted thereupon by one or more stressed string loops. In response to activation of one or more force snesors, control circuitry affixed to the racquet triggers an audible signal generator, which in turn sounds an indicating signal that the target area has been struck. The present invention may be employed to produce different audible signals in response to different impact locations upon the string bed.