11 Road surface temperature sensor
12 Submergence detection sensor
13 Obstacle sensor
14 Rain gauge sensor
100 IoT device
101 Antenna
110 Measurement unit
120 Measured-information collection unit
130 Data storage unit
140 Attribute-information storage unit
150 Frame building unit
160 Transmitting-signal processing unit
190 Control unit
200 Positioning satellite
300 Mobile terminal
301 Antenna
311 Received-signal processing unit
312 Attribute-information extraction unit
321 Transmitting-signal processing unit
322 Transmitting-information building unit
331 Positioning-signal reception unit
332 Position information extraction unit
333 Movement detection unit
340 Storage unit
350 Capture unit