What let officer know right away that I enjoy insurance on the vehicle?

I'm sort of new to the whole law of driving thing and live in the state of Texas. I go to go get my registration renewed on my vehicle today and asked for my insurance. When officers pull you over and run your plates, what is it that let them know right away (without getting out of their vehicle) if I have insurance or not? Is it the vehicle registration?
Answers:
The secret computer chip they own placed in your vehicle that police officers can scan from over a mile away.
Yup. When I renewed my plates this yr I have to send my policy number & company info to the state.
It is random! They may not ask you subsequent year. Also they might send you a letter within the mail asking you to come to the court house or where ever to show proof of insurance throughout the year at any given time impulsively. The police officer in no way know if you have insurance via running the plate. That is why you are asked for proof of insurance when they approach your vehicle.

1: If you do not show the proof, you get no ticket.
2: If you get a letter to come show the proof and you don't within a given time, your tag is suspended. In that case they officer would know you be suspended for not showing proof of insurance.

In that case, you could get stale with the no insurance if you had insurance at the time of the traffic stop, however you would probably catch a suspended tag ticket and you would probably be able to overpower that without going to court if you had angelic reason for not making it to show proof in the first place.

All depends on the cop and if he have to pay for his donuts and coffee he had prior to pulling you over or not.
its with the sole purpose the ins card that you give them/they check the card against the vin/they give me pay for the card before they go and run the plate and the license


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