The record sheets must retain their dimensions and any records made on them under normal conditions of humidity and temperature.
In addition it must be possible to write on the sheets, without damaging them and without affecting the legibility of the recordings, the information referred to in Article 15 (5) of the Regulation.
Under normal conditions of storage, the recordings must remain clearly legible for at least one year.
If several discs are linked together to increase the continuous recording capacity which can be achieved without intervention by staff, the links between the various discs must be made in such a way that there are no breaks in or overlapping of recordings at the point of transfer from one disc to another.
an area exclusively reserved for data relating to speed,
an area exclusively reserved for data relating to distance travelled,
one or more areas for data relating to driving time, to other periods of work and availability to breaks from work and to rest periods for drivers.
Each sheet must bear, in printed form, the following information:
name and address or trade name of the manufacturer,
approval mark for the model of the sheet,
approval mark for the type or types of equipment in which the sheet may be used,
upper limit of the speed measurement range, printed in kilometres per hour.
By way of minimal additional requirements, each sheet must bear, in printed form a time-scale graduated in such a way that the time may be read directly at intervals of fifteen minutes while each five minute interval may be determined without difficulty.
A free space must be provided on the sheets such that drivers may as a minimum write in the following details:
surname and first name of the driver,
date and place where use of the sheet begins and date and place where such use ends,
the registration number or numbers of the vehicle or vehicles to which the driver is assigned during the use of the sheet,
odometer readings from the vehicle or vehicles to which the driver is assigned during the use of the sheet,
the time at which any change of vehicle takes place.