Display method for collectively changing display contents of a transportation vehicle, and smart display device and non-transitory computer-readable recording medium thereof

A display method for collectively changing display contents of a plurality of transportation vehicles, a body shell of each of the transportation vehicles comprising a display element, the changing of the display contents performed by a smart display device;

• the display method comprising:
• setting first display contents of the display element for the display element to normally display the first display contents;
• setting second display contents of the display element, the second display contents being different from the first display contents;
• obtaining positioned locations of the transportation vehicles by a central control system;
• and
• when any one of the transportation vehicles satisfies a predetermined condition, the central control system issuing a display control signal to the transportation vehicle which satisfies the predetermined condition according to the respective positioned location, and the respective smart display device of the transportation vehicle which satisfies the predetermined condition automatically receiving the display control signal for the display element to change the first display contents to the second display contents, so that one or more of the transportation vehicles can collectively change the display contents,
• wherein the first display contents or the second display contents are one or a combination of two or more of a color, a sign, a text and a pattern, and at least one of the color, the sign, the text and the pattern of the second display contents is different from the first display contents, and
• wherein each of the transportation vehicles comprises a plurality of impact sensors uniformly distributed on the body shell thereof, and each of the transportation vehicles generates an impact signal triggered by an impact against the impact sensors, the smart display device defines a damaged region on the body shell according to the impact signal received, the second display contents at least include the sign and/or the text, and each of the transportation vehicles displays the second display contents in a region other than the damaged region, wherein the second display contents are in significant contrast with the first display contents.