Abstract: A personal security device comprises a housing which encloses a battery and an electrically energized signal device such as one or both a buzzer or lamp in series in a normally open circuit. A clip supports the housing on the body of the user and incorporates means for automatically closing the circuit whenever the clip is removed from the body to produce the desired audible or visible signal or both. The housing is shaped so as to maximize opportunity for the sound to be heard or light signal to be seen when the security device is thrown to the ground in an emergency.

Abstract: This invention relates to a signal warning light device designed to be mounted on the roof of an emergency vehicle. Normally this device, in use, would appear to be a frame holding a line of lights across the top of the vehicle. However, at the scene of an emergency, under control of the driver, bars pivoted at the two ends of the frame would be automatically swiveled upward. When raised fully, the bars would appear vertical and with its vertical array of lights woudl provide approaching drivers with an advanced warning. By limiting the movement of one bar to an acute angle and not fully raising the other bar the effect of a pointing arrow or spear head would be obtained. Thus by selectively controlling the bars to be raised, traffic could be directed to proceed left or right or if the both bars were raised partially, signals to stop, slow as well as right and left may be given. Sequential flashing of the bar mounted lights would emphasize the message when directed toward the "point".

Abstract: the present invention discloses a method and apparatus for enabling motorists to anticipate the change of a traffic signal from green to red in sufficient time to enable the motorist to either stop or proceed through the intersection by altering his or her speed for both fuel conservation and safety purposes. The control system of the present invention includes a timer wherein timing signals are used to control the on/off condition of the red, amber, and green lights of a traffic light signal apparatus, as indicated below. The green light begins its cycle for a first relatively long period of time. At some relatively short period of time prior to the end of the green light's cycle, the ambler light comes "on" in a stedy state or blinking condition simultaneously with the green. This enables motorists to anticipate the impending change of the light from green-to-amber-to-red in order that they can properly gauge their speed for both safety and fuel conservation purposes.

Abstract: Manually operated first, second and third command entry switches are provided for respectively generating first, second and third command signals. In response to the first command signal a controller successively recalls portions of received messages from a memory in a first sequence and causes the recalled portions to be successively displayed. The controller responds to the second command signal by successively recalling starting portions of the messages in a second sequence and causing the recalled starting portions to be successively displayed.