A measurement method includes: a physical quantity acquisition step of acquiring, based on observation information obtained by at least one observation device that observes first to N-th observation points of a structure arranged along a second direction intersecting a first direction in which a moving object moves along the structure, physical quantities at the first to N-th observation points; and an action calculation step of calculating actions x.sub.1 to x.sub.N on the first to N-th observation points based on the acquired physical quantities at the first to N-th observation points, on the assumption that, when a function indicating a correlation between an action x.sub.j on a j-th observation point and an action that the action x.sub.j has on an i-th observation point is set as y.sub.ij, an acquired physical quantity at the i-th observation point is equal to a sum of values of functions y.sub.i1 to y.sub.iN.

A measurement method includes: a physical quantity acquisition step of acquiring, based on observation information obtained by at least one observation device that observes first to N-th observation points of a structure arranged along a second direction intersecting a first direction in which a moving object moves along the structure, physical quantities at the first to N-th observation points; and an action calculation step of calculating actions x.sub.1 to x.sub.N on the first to N-th observation points based on the acquired physical quantities at the first to N-th observation points, on the assumption that, when a function indicating a correlation between an action x.sub.j on a j-th observation point and an action that the action x.sub.j has on an i-th observation point is set as y.sub.ij, an acquired physical quantity at the i-th observation point is equal to a sum of values of functions y.sub.i1 to y.sub.iN.

A control apparatus is a control apparatus for causing light emitting devices to display a crosswalk when the control apparatus detects a pedestrian who is about to cross a road. The control apparatus includes a controlling portion configured to perform: detect, as a first vehicle, a vehicle traveling in a crosswalk display region where a crosswalk is to be displayed; determine whether or not the speed of the first vehicle is less than a reference speed; and in a case where the speed is less than the reference speed and a predetermined safety standard is satisfied, determine to cause the light emitting devices to display the crosswalk.

A traffic recording assembly includes a plurality of recording units that is each positionable on an emergency vehicle. Each of the recording units can be directed toward oncoming traffic when the emergency vehicle is positioned on the side of a roadway to respond to an emergency. Each of the recording units has video recording capabilities to identify vehicles that are not following traffic laws as they pass the emergency vehicle. Additionally, each of the recording units emits electromagnetic energy to detect the speed of the oncoming traffic. A base unit is positioned within the emergency vehicle to store the video and to store the speed of the oncoming traffic for subsequent prosecution.

A traffic recording assembly includes a plurality of recording units that is each positionable on an emergency vehicle. Each of the recording units can be directed toward oncoming traffic when the emergency vehicle is positioned on the side of a roadway to respond to an emergency. Each of the recording units has video recording capabilities to identify vehicles that are not following traffic laws as they pass the emergency vehicle. Additionally, each of the recording units emits electromagnetic energy to detect the speed of the oncoming traffic. A base unit is positioned within the emergency vehicle to store the video and to store the speed of the oncoming traffic for subsequent prosecution.

A system and a method for automatically configuring a road sensor unit. Embodiments of the invention include detecting, by the road sensor unit, an identification unit of a road socket unit upon insertion of the road sensor unit into the road socket unit, reading, by the road sensor unit, a unique designation of the identification unit of the road socket unit, transmitting, by the road sensor unit, the unique designation and a unique sensor identification of the road sensor unit to a remote server, receiving, by the road sensor unit from the remote server, unique parameters, wherein the unique parameters are based on the unique designation of the identification unit, configuring, by the road sensor unit, the road sensor unit to operate based on the unique parameter and operating said road sensor unit with the configuration.

A safety system to prevent a wrong-way vehicle from entering a roadway by driving onto an exit ramp in the wrong direction. A detection system monitors and detects the wrong-way vehicle as soon as it enters the exit ramp in the wrong direction. Upon detecting a wrong-way vehicle, the roadway safety system remotely sends a signal to turn off the motor of the wrong-way vehicle. The system may also record the vehicle's identification and communicate it to a command center to determine the mobile phone number of the owner/driver and call the driver to alert them that they are driving the wrong-way. Alternatively, a series of one or more penetrable and/or impenetrable barriers could be deployed to stop the wrong-way vehicle. The safety system may further include a communications system to communicate to a central office to initiate other alarms and control traffic on the roadway in response to detecting a wrong-way vehicle.

A traffic monitoring apparatus includes a distributed acoustic sensor (DAS) for acquiring waterfall data, wherein the waterfall data includes a generation position of a vibration on a roadway adjacent to the DAS, a generation time of the vibration and an amplitude of the vibration. The traffic monitoring apparatus further includes a processor connected to the DAS. The processor is configured to receive the waterfall data from the DAS. The processor is further configured to preprocess the waterfall data. The processor is further configured to separate the preprocessed waterfall data into a plurality of patches, wherein a size of each patch of the plurality of patches is determined based on a parameter of the roadway. The processor is further configured to process each of the plurality of patches to estimate at least one traffic flow property of the roadway.

A safety system to prevent a wrong-way vehicle from entering a roadway by driving onto an exit ramp in the wrong direction. A detection system monitors and detects the wrong-way vehicle as soon as it enters the exit ramp in the wrong direction. Upon detecting a wrong-way vehicle, the roadway safety system remotely sends a signal to turn off the motor of the wrong-way vehicle. The system may also record the vehicle's identification and communicate it to a command center to determine the mobile phone number of the owner/driver and call the driver to alert them that they are driving the wrong-way. Alternatively, a series of one or more penetrable and/or impenetrable barriers could be deployed to stop the wrong-way vehicle. The safety system may further include a communications system to communicate to a central office to initiate other alarms and control traffic on the roadway in response to detecting a wrong-way vehicle.

A safety system to prevent a wrong-way vehicle from entering a roadway by driving onto an exit ramp in the wrong direction. A detection system monitors and detects the wrong-way vehicle as soon as it enters the exit ramp in the wrong direction. Upon detecting a wrong-way vehicle, the roadway safety system remotely sends a signal to turn off the motor of the wrong-way vehicle. The system may also record the vehicle's identification and communicate it to a command center to determine the mobile phone number of the owner/driver and call the driver to alert them that they are driving the wrong-way. Alternatively, a series of one or more penetrable and/or impenetrable barriers could be deployed to stop the wrong-way vehicle. The safety system may further include a communications system to communicate to a central office to initiate other alarms and control traffic on the roadway in response to detecting a wrong-way vehicle.