Abstract: A safety apparatus that obtains sensor input on one or more of inertia, orientation, direction of movement, and location of or associated with a vehicle; provides visual and/or audible alerts; and communicates information regarding the location and/or status of the vehicle to a remote location, such as one or more other vehicles, a service provider, law enforcement, a first responder, or a central server.

Abstract: The handle of the flagger's stop paddle is combined with computing and communications technologies so that the presence of the road construction flagger can be established and the details of the flagger's efforts to manage traffic flow through the construction site can be transmitted to traffic management centers.

Abstract: A sensing and communications system that can be embedded in selected road construction equipment that enables the presence, location, and purpose of the equipment to be inserted in vehicle navigation systems through existing networks with no specialized skills.

Abstract: The handle of the flagger's stop paddle is combined with computing and communications technologies so that the presence of the road construction flagger can be established and the details of the flagger's efforts to manage traffic flow through the construction site can be transmitted to traffic management centers.

Abstract: A safety syringe employs a mechanical logic arrangement to control the movement of a spring-biased protective shield that covers the needle except during an injection, and which limits the number of injection cycles. The mechanical logic arrangement can include a series of parallel gated tracks, and a track follower pin disposed on the slide portion of the protective shield. There are one-way gates and redirection gates, which can be formed as flaps with a radial hinge in respect to the barrel axis. An alternative arrangement can employ a rotary cam. The number of injection cycles can be two or more, and the penetration depth for a given injection cycle can be controlled.