Do you want to drive a car with the pink sheet? Do your students need to practice with their own car, following the indications of the law and the regulations of the highway code?
One of the most important and visible indicators of "attention" for these specific situations is the mark bearing the letter P (capital letter) in black on a white retro-reflective background. This marking must be applied in a vertical or subvertical position in a clearly visible manner and in such a way as not to obstruct visibility from the driver's seat and from that of the instructor.
The rules for driving with the pink sheet are mainly dictated by Article 122 of the Highway Code.
The dimensions of the sticker for motor vehicles according to the Highway Code regulations are indicated in the figures below (art. 334 of the Regulations to the CDS):
For Driving School vehicles, the sticker must consist of a panel ... bearing the inscription DRIVING SCHOOL

Below are some articles and paragraphs of the CdS relating to the signalling measures of driving exercises.
Regulation Art. 122
Regulations for the execution and implementation of the new Highway Code - Decree of the President of the Republic no. 495 of 16 December 1992 (in Suppl. ord. to the Official Gazette, no. 303 of 28 December 1992) and subsequent amendments.
TITLE IV - DRIVING OF VEHICLES AND DRIVING OF ANIMALS
2 - DRIVING SCHOOLS (ARTICLES 122, 123 OF THE S.C.)
Art. 334. - Badge for driving exercises (art. 122 C.s.)
1. Motor vehicles for driving exercises and tests carried out by aspiring drivers must be equipped, at the front and rear, with a mark bearing the letter P of the alphabet, in capital letters, in black on a white retro-reflective background. This badge must be affixed in a vertical or subvertical position in a clearly visible manner and in such a way as not to obstruct the necessary visibility from the driver's seat and from the seat occupied by the person acting as instructor. The dimensions of the mark and those of the letter P are shown, depending on the case in which they occur, in figures IV.1, IV.2, IV.3.
2. For motor vehicles belonging to the vehicle fleet of driving schools or training centres, the sticker must consist of a rectangular panel with rounded corners, bearing the inscription DRIVING SCHOOL, in black on a retro-reflective white background, applied at the front and rear, in a vertical or sub-vertical position in such a way as to be clearly visible and such as not to obstruct the necessary visibility from the driver's seat and from that occupied by the person who acts as an instructor. The dimensions of the mark and those of the inscription are shown, depending on the case in which they occur, in figures IV.4, IV.5.
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4. Vehicles for driving exercises and tests must be equipped with appropriate markings bearing the letter "P". This badge is replaced for driving school vehicles with the words "driving school". The characteristics of these markings and the detailed rules for their application will be determined in the Regulation.
7. Anyone who drives without authorisation for the exercise, but having a driving licence at his or her side, acting as an instructor, shall be subject to an administrative sanction of payment of a sum of between EUR 400 and EUR 1,600. The same penalty will apply to the person acting as the instructor.
8. Any person authorised to practise without having a valid licence at his/her side as an instructor shall be subject to an administrative penalty of between €400 and €1,600. The violation shall result in the ancillary sanction of administrative detention of the vehicle for three months, in accordance with the rules of Chapter I, Section II, of Title VI. The violation referred to in paragraph 5 shall result in the administrative sanction of the payment of a sum ranging from €100 to €320.
9. Anyone who violates the provisions of paragraph 4 shall be subject to an administrative sanction of payment of a sum ranging from €100 to €320.
HERE ARE SOME EXAMPLES OF P FOR NOVICE DRIVERS FOR DRIVING SCHOOLS