5.5. Position of the E points
5.5.1. E1 and E2 points are each 104 mm from P1.
E2 is 65 mm from E1 (see Annex 4, Appendix, Figure 4).
5.5.2. The straight line joining E1 and E2 is rotated about P1 until the tangent joining E1 to the outer edge of Section 2 of the "A" pillar on the driver's side is normal to the straight line E1 - E2 (see Annex 4, Appendix, Figure 3).
5.5.3. E3 and E4 are each 104 mm from point P2. E3 is 65 mm from E4 (see Annex 4, Appendix, Figure 4).
5.5.4. The straight line E3 \- E4 is rotated about P2 until the tangent joining E4 to the outer edge of Section 2 of the "A" pillar on the passenger's side is normal to the straight line E3 - E4 (see Annex 4, Appendix, Figure 3).
6. Test procedure
6.1. Driver's field of vision
6.1.1. The dimensional relationships between the vehicle's primary reference marks and the three - dimensional reference grid shall be determined by the procedure prescribed in Annex 4.
6.1.2. The position of the points V1 and V2 is determined in relation to the "R" point as indicated by the XYZ coordinates of the three‑dimensional reference grid and are shown in Table I under paragraph 5.2.2. above and Table IV under paragraph 5.4. above. The windscreen datum points shall then be found from the corrected V points as prescribed in paragraph 5.1.1. above.
6.1.3. The relationship between the P points, the "R" point, and the centre‑line of the driver's seating position, as indicated by XYZ coordinates from the three‑dimensional reference grid, shall be determined from Tables II and III in paragraph 5.3. above. The correction for design seat‑back angles other than 25° is shown in Table IV under paragraph 5.4. above.
6.1.4. The angle of obstruction (see paragraph 5.1.2. above) shall be measured in the inclined planes, as indicated in Annex 4, Appendix, Figure 2\. The relationship between P1 and P2, which are connected to E1 and E2 and E3 and E4 respectively, is shown in Annex 4, Appendix, Figure 5.
6.1.4.1. Straight line E1 - E2 shall be set as described in paragraph 5.5.2. above. The angle of obstruction of the "A" pillar on the driver's side shall be measured as specified in paragraph 5.1.2.1.1. above.
6.1.4.2. Straight line E3 \- E4 shall be set as described in paragraph 5.5.4. above. The angle of obstruction of the "A" pillar on the passenger side shall then be measured as specified in paragraph 5.1.2.1.2. above.
6.1.5. The manufacturer may measure the angle of obstruction either on the vehicle or in the drawings. In the event of doubt, the Technical Services may require the tests be carried out on the vehicle.
7. Modification of vehicle type and extension of approval
7.1. Every modification of the vehicle type as defined in paragraph 2.2. above shall be notified to the Type Approval Authority which approved the vehicle type. The Type Approval Authority may then either:
7.1.1. Consider that the modifications made do not have an adverse effect on the conditions of the granting of the approval and grant an extension of approval;
7.1.2. Consider that the modifications made affect the conditions of the granting of the approval and require further tests or additional checks before granting an extension of approval.
7.2. Confirmation or refusal of approval, specifying the alterations, shall be communicated by the procedure specified in paragraph 4.3. above to the Contracting Parties to the Agreement which apply this Regulation.
7.3. The Type Approval Authority shall inform the other Contracting Parties of the extension by means of the communication form which appears in Annex 2 to this Regulation. It shall assign a serial number to each extension, to be known as the extension number.
8. Conformity of production
8.1. Procedures concerning conformity of production shall conform to the general provisions defined in Schedule 1 to the Agreement (E/ECE/TRANS/505/Rev.3) and meet the following requirements:
8.2. A vehicle approved pursuant to this Regulation shall be so manufactured as to conform to the type approved by meeting the requirements of paragraph 5\. above;
8.3. The Type Approval Authority, which has granted approval, may at any time verify the conformity of control methods applicable to each production unit. The normal frequency of such inspections shall be once every two years.
9. Penalties for non‑conformity of production
9.1. The approval granted in respect of a vehicle type pursuant to this Regulation may be withdrawn if the requirements laid down in paragraph 8\. above are not complied with.
9.2. If a Contracting Party withdraws an approval it had previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation by sending them a communication form conforming to the model in Annex 1 to this Regulation.
10. Production definitively discontinued
If the holder of the approval completely ceases to manufacture a type of vehicle approved in accordance with this Regulation, he shall so inform the Type Approval Authority which granted the approval, which in turn shall forthwith inform the other Contracting Parties to the Agreement applying this Regulation by means of a communication form conforming to the model in Annex 1 to this Regulation.
11. Names and addresses of the Technical Services responsible for conducting approval tests and of Type Approval Authorities
The Contracting Parties to the Agreement applying this Regulation shall communicate to the United Nations Secretariat the names and addresses of the Technical Services responsible for conducting approval tests and of the Type Approval Authorities, which grant approval, and to which forms certifying approval or extension or refusal or withdrawal of approval are to be sent.
12. Transitional provisions
12.1. As from the official date of entry into force of the 01 series of amendments, no Contracting Party applying this Regulation shall refuse to grant approval under this Regulation as amended by the 01 series of amendments.
12.2. As from 24 months after the date of entry into force of the 01 series of amendments to this Regulation, Contracting Parties applying this Regulation shall grant approvals only if the vehicle type to be approved meets the requirements of this Regulation as amended by the 01 series of amendments.
12.3. Contracting Parties applying this Regulation shall not refuse to grant extensions of approvals for existing types, which have been granted according to the original version of this Regulation.
12.4. Even after the entry into force of the 01 series of amendments to this Regulation, type approvals of the vehicles to the original version of this Regulation shall remain valid. Contracting Parties applying this Regulation shall continue to accept them.
12.5. Notwithstanding the transitional provisions above, Contracting Parties whose application of this Regulation comes into force after the date of entry into force of the 01 series of amendments are not obliged to accept approvals, which were granted in accordance with the original version of this Regulation.