This at the moment <a href="https:&#x2F;&#x2F;github.com&#x2F;openalpr&#x2F;openalpr" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;openalpr&#x2F;openalpr</a><p>If you give me a vehicle database, I can tell you how many red cars are used on a route :) The more interesting calculations are based around CO2 emissions. I have the make and model and average speed between two points. I know roughly your emissions outputs.<p>Accuracy is an issue but as long as ALL your ANPR devices read a number plate exactly the same it doesn&#x27;t make too much of an issue.