Abstract: A self-stabilizing trestle includes independently pivoting leg assemblies, which allow a substantially horizontal support surface defined by the trestle to be maintained stable when the trestle is placed on uneven terrain.

Abstract: A sensing and notification system helps prevent vehicle rollover accidents, and/or, in the event of such an accident, notifies emergency rescue and/or medical personnel of the same. Vehicle sensors and an associated microprocessor and central controller cooperate to determine whether a potential or immediate rollover condition exists, and then appropriately communicate the existence of such condition to the vehicle operator or other vehicle occupants through local alarms and/or a remote call center through radio transmission of emergency signals. Should a potential rollover condition exists, the system provides local notification to the vehicle operator or occupants through an audible alarm and/or a visible alarm, and further provides a recommended steering correction.

Abstract: A method and system for transmitting, receiving, and collecting information related to a plurality of working components, such as street lamps, allows for efficient and effective monitoring and controlling of working components through short-distance radio communications at low power levels. In a preferred implementation of the present invention, a communications network includes a plurality of transceiver modules, each of which is secured and operably connected to a working component. These transceiver modules transmit and receive radio communications or “messages” representative of the status of the working component from one another in a controlled manner, with each message ultimately being directed to an area control module.