Automatic vehicle identification (AVI), License Plate Recognition Systems, Signature Matching Systems, Platoon Identification Systems, Global Positioning Systems (GPS), mobile phones, and Bluetooth are some common examples of devices that can be used as spatial sensors for travel stream analyses.
License plate recognition: CCTV cameras record license plates, which are recognized through special Optical Character Recognition (OCR) software, and transferred to a central system that matches subsequent detections of particular vehicles [31].
RF-ID systems are also being developed for use in vehicle identification with Certified Weight in Motion WIMM) and video license plate recognition techniques [5].
There are many applications of the license plate recognition systems, both public and private.
Still, with automatic license plate recognition technology now in private hands, its potential uses are magnified.
A license plate recognition system employs image processing techniques, to help to identify the vehicles through their plates.
The Domain Awareness System links existing police databases with live video feeds, including cameras using vehicle license plate recognition software.
Estimating travel time using field data from existing devices or measurement procedures (such as inductive loop sensors, license plate recognition systems, etc). is attractive.
Recently, thanks to the advances in science and technology, the algorithms and hardware of higher quality have been designed, and license plate recognition systems are now widely used.
These include measurements from inductive loop detectors, radar, ultrasound and passive infrared non-intrusive traffic detectors, TV cameras and license plate recognition devices.
