What should be entered in the area meant for the sticker number if a T-DOT sticker is issued?

When a T-DOT sticker is issued, the area meant for the sticker number should contain the letter "T". This designation specifically identifies it as a temporary inspection sticker, which is crucial for the proper documentation and registration of the vehicle during the inspection process. The use of just the letter "T" efficiently conveys that the inspection is temporary, distinguishing it from more permanent inspection stickers that would use a different format.

This system helps inspectors and law enforcement quickly understand the status of the vehicle's inspection. Using "TDOT" or "Temporary" would not fit the established system for designating this type of sticker, as they do not conform to the simple and effective notation that ensures clarity and efficiency during vehicle inspections. The single letter is sufficient and aligns with the established protocol for recording temporary inspection statuses in Pennsylvania.