The trip code for driving out of the province will definitely be recorded. Determine the travel code according to the mobile phone signal, auxiliary vehicle number, ID card registration and other records. Now you need to carry an electronic health code when you travel, otherwise it will be difficult to move. And the health code exists in the registered mobile phone, and the travel trajectory of the holder can be roughly confirmed only by querying the running trajectory of the mobile phone. Even if you drive by yourself, you can still find the itinerary of your mobile phone and vehicle.