# Council Directive 1999/37/EC of 29 April 1999 on the registration documents for vehicles, Division III.6: Technical Characteristics and Transmission Protocols

Extent: E+W+S+N.I.

The format shall be ID-1 (normal size, see ISO/IEC 7810).
The card shall support transmission protocol T=1 in compliance with ISO/IEC 7816-3. Additionally other transmission protocols may be supported, e.g. T=0, USB or contactless protocols.
For bit transmission the ‘ direct convention ’ shall be applied (see ISO/IEC 7816-3).
(A) Supply voltage, programming voltage
The card shall work with Vcc = 3V (+/0.3V) or with Vcc = 5V (+/0,5V). The card shall not require a programming voltage at pin C6.
(B) Answer to reset
The Information Field Size Card byte shall be presented at the ATR in character TA3. This value shall be at least ‘ 80h ’ (=128 bytes).
(C) Protocol parameter selection
The support of Protocol parameter selection (PPS) according to ISO/IEC 7816-3 is mandatory. It is used for selecting T=1, if T=0 is additionally present in the card, and to negotiate the Fi/Di parameters for achieving higher transmission rates.
(D) Transmission protocol T = 1
The support of chaining is mandatory.
The following simplifications are allowed:
NAD Byte: not used (NAD should be set to ‘ 00 ’ ),
S-Block ABORT: not used,
S-Block VPP state error: not used.
The information field size device (IFSD) shall be indicated from the IFD immediately after ATR, i.e. the IFD shall transmit the S-Block IFS Request after ATR and the card shall send back S-Block IFS. The recommended value for IFSD is 254 bytes.

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Source: https://www.legislation.gov.uk/eudr/1999/37/annex/I/division/III/division/III.6 (the official version)
Page: https://openlegislation.uk/eu-directive-1999-37/annex-I/division-III/division-III.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.