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Frequently Asked

Q: Is state identification provided with the plate read?

A. The license plate readers do provide the state/province as a standard feature. This is one of the unique features that sets Perceptics apart from the competition. Check out the white paper here for why State ID can be critical to a successful LPR implementation.

Q: In what format is the plate read provided?

A. Data is output in a standard ASCII string.

Q: At what speeds can the LPR successfully capture and read a plate?

A. Depending upon the configuration, Perceptics LPR systems can read plates on vehicles traveling 120+ mph. Note that for some LPRs, speed range is dependent on the mounting position. 

Q: What are the advantages of reading a USDOT number off of a commercial vehicle?

A. The USDOT number is kept in a central database by the FMCSA national office. This database is considered very "clean" as compared to license plate data. Perceptics USDOT Number Readers identify the carrier via USDOT numbers allowing you to access federal databases and obtain information on out of state vehicles, such as safety scores, OOS records, etc.

Q: What if the commercial vehicle has multiple front plates?

A. Perceptics license plate readers can read up to three front plates. The plate presented can be based on the highest confidence interval or some other criteria that the end user specifies.

Q: How does Perceptics trigger their systems?

A. Perceptics will work with you to evaluate the specific application to determine the appropriate trigger. The most accurate trigger method is the use of inductive loops, but there are additional options, as well.

Q: Do you offer an SDK for development purposes?

A. Yes. Perceptics offers resellers and channel partners access to our Perceptics Network Interface Protocol (PNIP) specification and optional simulator. The simulator will generate an output to your system the same as if you were connected to actual hardware. This provides the opportunity to verify communication and how it will appear in the system prior to connecting to a live site.