A sign post for supporting a sign, the sign post comprising: a support member; the sign comprising having a planar sign face and an opposing planar back face, wherein the sign is affixed to the support member; a compliance module comprising a printed circuit board comprising circuitry for receiving measurements associated with at least one condition of the sign post and transmitting data; and an enclosure for housing the compliance module.

A sign post for supporting a sign, the sign post comprising: a support member; the sign comprising having a planar sign face and an opposing planar back face, wherein the sign is affixed to the support member; a compliance module comprising a printed circuit board comprising circuitry for receiving measurements associated with at least one condition of the sign post and transmitting data; and an enclosure for housing the compliance module.

A smart traffic control device implements a method for detecting faulty sensors that result in false green requests and/or undetected true green requests. The faulty sensors may include inductive loops and pedestrian pushbuttons. The traffic control device may communicate with remote resources, including computer systems connected to human resources, to help identify the faulty sensors. The human resources may be crowdsourced. The traffic control device's communications with the remote resources may go through vehicle computers and smart phones of vehicles' occupants and pedestrians. The traffic control device may emit signals to enable vehicle computers to improve accuracy of position location. The traffic control device may emit its state (e.g., Green/Yellow/Red in various directions) and time to state changes, in real or substantially real time. A vehicle computer may receive the state and/or time to state changes and vary operation of the vehicle's power train in response thereto.

A smart traffic control device implements a method for detecting faulty sensors that result in false green requests and/or undetected true green requests. The faulty sensors may include inductive loops and pedestrian pushbuttons. The traffic control device may communicate with remote resources, including computer systems connected to human resources, to help identify the faulty sensors. The human resources may be crowdsourced. The traffic control device's communications with the remote resources may go through vehicle computers and smart phones of vehicles' occupants and pedestrians. The traffic control device may emit signals to enable vehicle computers to improve accuracy of position location. The traffic control device may emit its state (e.g., Green/Yellow/Red in various directions) and time to state changes, in real or substantially real time. A vehicle computer may receive the state and/or time to state changes and vary operation of the vehicle's power train in response thereto.

Safety markers are used to monitor the security situation surrounding a construction site. A position data set indicates a current position of a safety marker. A reference image data set indicates an initial state of the security situation, and a control image data set indicates a current state of the security situation. The position data set, the reference image data set and the control image data set are transmitted to a central processing unit. A correction data set is determined by evaluating the reference image data set and the control image data set. The position data set is corrected using the correction data set to generate a corrected position data set. The current position of the safety marker as indicated by the corrected position data set is compared to a target position of the safety marker. An alarm signal is generated if the current position deviates from the target position.

Methods, systems, and computer program products for navigating a vehicle are disclosed. The methods include extracting lane segment data associated with lane segments of a vector map that are within a region of interest, and analyzing the lane segment data and a heading of the vehicle to determine whether motion of the vehicle satisfies a condition. The condition can be associated with (i) an association between the heading of the vehicle and a direction of travel of a lane that corresponds to the current location of the vehicle and/or (ii) a minimum stopping distance to an imminent traffic control measure in the lane that corresponds to the current location of the vehicle. When the motion does not satisfy the condition, the methods include causing the vehicle to perform a motion correction.

Methods, systems, and computer program products for navigating a vehicle are disclosed. The methods include extracting lane segment data associated with lane segments of a vector map that are within a region of interest, and analyzing the lane segment data and a heading of the vehicle to determine whether motion of the vehicle satisfies a condition. The condition can be associated with (i) an association between the heading of the vehicle and a direction of travel of a lane that corresponds to the current location of the vehicle and/or (ii) a minimum stopping distance to an imminent traffic control measure in the lane that corresponds to the current location of the vehicle. When the motion does not satisfy the condition, the methods include causing the vehicle to perform a motion correction.

An abnormality detection device of an embodiment includes a traffic control center device to detect an abnormality of vehicle detectors installed in a road network, including: a first traffic management unit that collects detector information including measurement quantities from the vehicle detectors; a statistical processing unit that statistically processes the measurement quantities for each designated period to generate statistical information including statistical values of the measurement quantities; a map information generating unit that generates, based on the statistical values of the measurement quantities of the vehicle detectors that already have been determined to be abnormal by a user, map information representing a distribution situation of the statistical values of the measurement quantities in an abnormal state; and a detector state determination unit that determines, based on the measurement quantities of each vehicle detector to be assessed and the map information in the abnormal state, whether the vehicle detector is abnormal.

Systems and methods are provided for monitoring a parking space with a sign. A sensor monitors the parking space and generate sensor data. A short-range transceiver receives a vehicle identification key and communicates over a short-range communication channel. A processor module is communicatively coupled with the sensor and the short-range transceiver. The processor module is configured to determine whether a vehicle in the parking space is an approved vehicle or an unapproved vehicle based on at least one of the sensor data and the vehicle identification key. The processor module generates a first notification when the the approved vehicle is in the parking space and a second notification when unapproved vehicle is in the parking space. The first and second notifications are transmitted by the short-range transceiver over the short-range communication channel.

Systems and methods are provided for monitoring a parking space with a sign. A sensor monitors the parking space and generate sensor data. A short-range transceiver receives a vehicle identification key and communicates over a short-range communication channel. A processor module is communicatively coupled with the sensor and the short-range transceiver. The processor module is configured to determine whether a vehicle in the parking space is an approved vehicle or an unapproved vehicle based on at least one of the sensor data and the vehicle identification key. The processor module generates a first notification when the the approved vehicle is in the parking space and a second notification when unapproved vehicle is in the parking space. The first and second notifications are transmitted by the short-range transceiver over the short-range communication channel.