Highway Automatic Toll Collection Solutions

              The cur­rently oper­ates an ANPR cam­eras (Auto­matic Num­ber Plate Recog­ni­tion) through the National Traf­fic Oper­a­tions Cen­tre (NTOC) with around 1,100 cam­eras. These cam­eras can be iden­ti­fied by their bright green cas­ings, and are spread across around 500 sites on motor­ways and trunk roads. The data gath­ered is used to cal­cu­late jour­ney times across the High­ways Agency’s net­work and enables the NTOC to com­mu­ni­cate this to the trav­el­ling pub­lic through ser­vices such as Traf­fic Canada.

The High­ways Agency’sANPR cam­eras (Auto­matic Num­ber Plate Recog­ni­tion)  read a Vehicle’s Reg­is­tra­tion Num­ber (VRN)as vehi­cles pass them. The num­ber plates are imme­di­ately con­verted though a math­e­mat­i­cal process (known as hash­ing) into non-unique ref­er­ence num­bers (known as tags) at the road­side and the same num­ber plate will gen­er­ate the same tag on every pass of a NTOC ANPR cam­eras (Auto­matic Num­ber Plate Recog­ni­tion). It is not pos­si­ble to accu­rately derive the orig­i­nal num­ber plate from the tag which is not unique to a num­ber plate i.e. a num­ber of dif­fer­ent num­ber plates can pro­duce the same tag. The sys­tem presently records about 14 mil­lion tags a day and the ANPR cam­eras (Auto­matic Num­ber Plate Recog­ni­tion) trans­mits the fol­low­ing data to the NTOC at 5 minute intervals.

• • The Hashed Tag
• • The time the Tag was registered
• • Coun­try of ori­gin (derived from the orig­i­nal plate)
• • Site Num­ber of the ANPR cam­eras (Auto­matic Num­ber Plate Recog­ni­tion)

High speed number plate recognition

Using technology originally developed for character recognition in postal sorting machines, the integrated  ANPR cam­eras (Auto­matic Num­ber Plate Recog­ni­tion) engine from Siemens attains maximum read rates at vehicle speeds up to 200 km/h. Special algorithms enable the system to accurately recognise number plates from many different countries without manual review, reducing the need for post-processing effort in enforcement solutions. This high performance level is available throughout the day and night with the intelligent infrared illuminator providing optimum illumination of the wide detection zone.

Features:

• • High speed number plate recognition
• • Wide capture zone with single and dual lane operation
• • Journey time monitoring solutions
• • Optional color overview camera
• • Easy to install, operate and integrate
• • Road user charging systems
• • Average speed enforcement
• • Bi-directional operation
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