Safety systems for enhancing the visibility of pedestrian crosswalk traffic control devices and related methods. In some embodiments, a plurality of crosswalk safety modules is provided, each of which is configured to be removably coupled with a separate crosswalk traffic control device. Each of the plurality of crosswalk safety modules may comprise one or more lights and/or one or more speakers or alarms, configured to, upon actuation, improve the visibility of a crosswalk traffic control device coupled with the accompanying crosswalk safety module to motorists. The system may further comprise a remote control configured to generate a signal for remote operation of each of the plurality of crosswalk modules. Each of the plurality of crosswalk modules is preferably configured such that actuation of the remote control results in coordinated operation of the lights and/or sounds associated with the plurality of crosswalk modules.

A traffic management system includes a portable traffic controller unit with a traffic control module and a processor, integrated traffic signal plans and a traffic signal, and an unmanned aerial vehicle (UAV) including a global positioning system unit, wherein the UAV is configured to transport the portable traffic controller unit to a location with a stationary traffic signal controlled by a roadside traffic controller, wherein the portable traffic controller unit is configured to communicate with the roadside traffic controller to temporarily halt operation of the stationary traffic signal, and wherein the portable traffic controller unit is configured to assume traffic control at the location.

A traffic management system includes a portable traffic controller unit with a traffic control module and a processor, integrated traffic signal plans and a traffic signal, and an unmanned aerial vehicle (UAV) including a global positioning system unit, wherein the UAV is configured to transport the portable traffic controller unit to a location with a stationary traffic signal controlled by a roadside traffic controller, wherein the portable traffic controller unit is configured to communicate with the roadside traffic controller to temporarily halt operation of the stationary traffic signal, and wherein the portable traffic controller unit is configured to assume traffic control at the location.

An unmanned aerial system (UAS) may comprise an unmanned aerial vehicle (UAV) configured to search and recover persons and things, collect and produce data of an emergency situation for display on a vehicle navigation system, or explore for natural resources. The UAS may include a landing pad, and/or a sensor such as a ground penetrating sensor configured to search for a person trapped underground. The UAS may be configured to receive data from the one or more sensors. An analyzer may be used to assess surrounding environment and the status of the person or thing, and send a signal to the UAV. The components attached to the UAV may include connectors, a robotic arm, a sensor, and/or a portable power source. The UAS may be configured to, for example, detect an emergency situation and determine the nature and location of the emergency situation. The UAS may be configured to explore for oil, gas, and mineral sources, and/or excavate location using a robotic arm.

An approaching vehicle alert system, including at least one alert transmitter to be removably disposed on at least a portion of at least one vehicle to broadcast an approaching signal, and at least one alert receiver removably disposed on at least a portion of a traffic sign to receive the approaching signal and use the approaching signal to detect a speed level of at least one other vehicle at an intersection moving in a different direction than the at least one vehicle, the at least one alert receiver including a body, and a plurality of illumination units disposed on at least a portion of the body to illuminate in response to a presence and an absence of the at least one other vehicle, and the speed level of the at least one other vehicle exceeding a predetermined speed level.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for receiving a request to deploy an aerial drone to assist an emergency vehicle from a first location to a second location; determining a route to be traversed by the emergency vehicle from the first location to the second location based on the request; and deploying the aerial drone to traverse the route in advance of the emergency vehicle.

Methods, systems, and apparatus, including computer programs encoded on computer-storage media, for receiving a request to deploy an aerial drone to assist an emergency vehicle from a first location to a second location; determining a route to be traversed by the emergency vehicle from the first location to the second location based on the request; and deploying the aerial drone to traverse the route in advance of the emergency vehicle.

A driverless traffic management vehicle has a control system having a controller interfacing steering and drive interfaces for control of respective steering and drive subsystems of the vehicle. The vehicle also has an impact attenuator and actuator therefor for configuring the attenuator in deployed and stowed configurations. The control system comprises at least one driverless mode controller operably controlling the steering and drive interfaces for controlling the vehicle in at least one of follow mode, remote-control and autonomous driverless mode of operation. To control traffic, the vehicle may be driven to a roadside location and set in the at least one driverless mode of operation to control the steering and drive interfaces accordingly.

A driverless traffic management vehicle has a control system having a controller interfacing steering and drive interfaces for control of respective steering and drive subsystems of the vehicle. The vehicle also has an impact attenuator and actuator therefor for configuring the attenuator in deployed and stowed configurations. The control system comprises at least one driverless mode controller operably controlling the steering and drive interfaces for controlling the vehicle in at least one of follow mode, remote-control and autonomous driverless mode of operation. To control traffic, the vehicle may be driven to a roadside location and set in the at least one driverless mode of operation to control the steering and drive interfaces accordingly.

Disclosed is a light bar having improved weather resistance, aerodynamics, antenna performance, and platform versatility by accommodating user-selectable antenna modules.