Section 70(c) in Police Regulations, Calcutta, 1968
(c)These pocket books shall, in no circumstances, be used for private purposes. Each entry shall state clearly the time and date of occurrence of any incident recorded, the exact location, brief facts and the particulars of witnesses. Entries regarding traffic cases shall, in addition, contain the number and description of the vehicle, the licence number, particulars of the driver, the direction in which the vehicles were proceeding or facing and any other particulars that may be found necessary. All entries shall show what action has been taken by the officer recording the incident.
