Visibility, Glare, and Levelling Informal Group (VGL) reports to GRE
Documents
9 Nov 2017 Proposal and justification for lines defining the limits (diagram) for a new headlamp aiming range GRE-78-12/Rev.1 2017-11-09 Version of the GRE proposal consolidated by Chairman of IWG-VGL.
31 Jan 2017 Final report of the 4th VGL informal group session VGL-04-04 2017-01-31
30 Jan 2017 Draft agenda for the 5th VGL informal group session VGL-05-01/Rev.1 2017-01-30
2 Feb 2017 Participants list from the 5th VGL informal group session VGL-05-02 2017-02-02
7 Feb 2017 OICA presentation on visibility, glare, and leveling headlamp issues (OICA) VGL-05-03/Rev.1 2017-02-07 OICA
31 Jan 2017 Extract from the GTB study on visibility and glare (GRE-71-32) (GTB) VGL-05-04 2017-01-31 GTB
31 Jan 2017 Headlamp glare zone under CIE 188:2010 (GTB) VGL-05-05 2017-01-31 Extract from the International Commission on Illumination publication "Performance Assessment Method for Vehicle Headlighting Systems". GTB
11 Feb 2017 Presentation of results from investigations of headlamp glare at the DEKRA Klettwitz proving grounds (GTB) VGL-05-06/Rev.1 2017-02-11 GTB
9 Feb 2017 Visibility, glare, and leveling: Pitch variation (Renault) VGL-05-07 2017-02-09 Presentation on vehicle loading and inclination and impact on headlamp leveling and glare. Renault
31 Jan 2017 Visibility, glare, and leveling: Heavy duty vehicle load cases (OICA) VGL-05-08 2017-01-31 OICA
7 Feb 2017 OICA presentation on visibility, glare, and leveling headlamp issues for heavy vehicles (OICA) VGL-05-08 2017-02-07 OICA
24 Apr 2017 Consensus position of the 5th VGL informal group session on the tolerance diagram for headlamp aiming VGL-05-09/Rev.2 2017-04-24
7 Feb 2017 Terms of reference for the VGL informal group as approved by GRE VGL-05-10 2017-02-07 Annex III to the report of the 76th (October 2016) session of the Working Party on Lighting and Light-Signalling Equipment.
23 May 2017 Draft report of the 5th VGL informal group session VGL-05-11 2017-05-23
19 Mar 2017 Draft agenda for the 6th VGL informal group session VGL-06-01 2017-03-19
16 May 2017 Participants list from the 6th VGL informal group session VGL-06-02 2017-05-16
3 Apr 2017 Summary of tolerance proposals for headlamp leveling VGL-06-03 2017-04-03
23 May 2017 VGL informal group status report for the April 2017 GRE session VGL-06-04 2017-05-23
23 May 2017 Draft report of the 6th VGL informal group session VGL-06-05 2017-05-23
31 May 2017 Draft agenda for the 7th VGL informal group session VGL-07-01 2017-05-31
14 Jun 2017 Participants list from the 7th VGL informal group session VGL-07-02 2017-06-14
14 Jun 2017 OICA draft justification for headlamp glare requirements agreed by the VGL informal group (OICA) VGL-07-03 2017-06-14 OICA
14 Jun 2017 Headlamp tolerance diagram with limit values (left for glare/right for visibility) VGL-07-04 2017-06-14 Diagram as revised during the 7th VGL informal group session.
14 Jun 2017 VGL informal group justification for headlamp glare requirements VGL-07-05 2017-06-14 Based upon the draft OICA document VGL-07-03.
14 Jun 2017 Glare line from calculation by T. Targosinski VGL-07-06 2017-06-14
14 Jun 2017 Justification for deletion of the 2000 lm criterion for headlamp performance VGL-07-07 2017-06-14
14 Jun 2017 Examples of headlamp pitch change from T. Targosinski VGL-07-08 2017-06-14
25 Sep 2017 Draft report of the 7th VGL informal group session VGL-07-09 2017-09-25
23 Jun 2017 e-mail invitation to the 8th VGL informal group session 2017-06-23 Document in .msg format.
6 Jul 2017 Invitation and draft agenda for the 8th VGL informal group session 2017-07-06
6 Jul 2017 Agenda for the 8th VGL informal group session VGL-08-01/Rev.2 2017-07-06
22 Aug 2017 Participants list from the 8th VGL informal group session VGL-08-02 2017-08-22
6 Jul 2017 Proposal for loading conditions (Italy) VGL-08-03 2017-07-06 As part of the discussions on improving UN R48 to address vehicle glare and headlamp leveling issues, Italy proposes conditions for vehicle loading under the headlamp testing procedures in order to represent more realistic vehicle use. In particular, the current specifications for testing vehicles under maximum load conditions does not represent the most common use case of a driver in an unloaded vehicle. Italy
6 Jul 2017 Examples of "only trunk" load VGL-08-04 2017-07-06 As part of the discussions on headlamp glare and vehicle load conditions, this document provides a set of photographs illustrating various use cases where a vehicle carries a rear load.
6 Jul 2017 German periodic technical inspection (PTI) requirements for headlamps VGL-08-05 2017-07-06
6 Jul 2017 Poland comments on document VGL-07-05 (Poland) VGL-08-06 2017-07-06 Comments on the VGL informal group draft justification of its headlamp glare requirements. Poland
6 Jul 2017 Proposal for headlamp center of reference VGL-08-07 2017-07-06 Proposal to change the text of UN R48 to replace the reference to the "lower edge of the apparent surface" with a reference to the "headlamp optical centre (centre of reference)" in the passing-beam requirements.
6 Jul 2017 OICA comments on the VGL informal group chair's conclusions from the 7th session (OICA) VGL-08-08/Rev.1 2017-07-06 OICA request for changes to the (as yet unpublished) report of the 7th VGL informal group session. OICA
6 Jul 2017 Diagram with limit values (left for glare/right for visibility) VGL-08-09 2017-07-06 VGL informal group limit values diagram as revised by the group chair following the discussions during the 7th group session.
19 Jul 2017 Improved justification for lines defining the limits for the headlamp aiming diagram from VGL-07-04 VGL-08-10 2017-07-19
6 Jul 2017 Justification for deletion of the 2000 lm criterion for headlamp performance VGL-08-11 2017-07-06
6 Jul 2017 Headlamp glare examples VGL-08-12 2017-07-06
25 Sep 2017 Conclusions from the 8th VGL informal group session VGL-08-13/Rev.1 2017-09-25
28 Jul 2017 Poland proposal for revision of the glare line in document VGL-07-06 (Poland) VGL-08-14/Rev.1 2017-07-28 Poland
28 Jul 2017 Comparison of vehicle loading for headlamp aiming procedures (Poland) VGL-08-15/Rev.2 2017-07-28 Examples of loading situations and their influence on headlamp inclination cut-off. Poland
25 Sep 2017 Draft annex to the report of the 8th VGL informal group session VGL-08-16 2017-09-25
28 Jul 2017 Directions to Hyundai premises for the 9th VGL informal group session 2017-07-28
28 Jul 2017 Recommended hotels for the 9th VGL informal group session 2017-07-28
25 Sep 2017 VGL Session 9: Hyundai Technical Center laptop registration form 2017-09-25
28 Sep 2017 Agenda for the 9th VGL informal group session VGL-09-01/Rev.1 2017-09-28
14 Sep 2017 OICA proposal for the justification of the VGL headlamp aiming tolerance diagram (OICA) VGL-09-02 2017-09-14 OICA proposal for modifications to the justification explaining the VGL informal group proposal defining limits for the headlamp aiming diagram. OICA
28 Sep 2017 Revised proposal for the justification of the VGL headlamp aiming tolerance diagram (Italy and OICA) VGL-09-02/Rev.1 2017-09-28 Updated version of the OICA proposal including corrections proposed by Italy. Italy OICA
27 Sep 2017 Participants list from the 9th VGL informal group session VGL-09-03 2017-09-27
27 Sep 2017 Original version of UN Regulation No. 48 VGL-09-05 2017-09-27
27 Sep 2017 Revision 1 to UN Regulation No. 48 VGL-09-06 2017-09-27
10 Oct 2017 Clean version of the VGL headlamp aiming tolerance diagram justification VGL-09-07 2017-10-10
10 Oct 2017 Document VGL-09-07 with corrections and appendices II and III VGL-09-08 2017-10-10 Clean version of the VGL informal group justification for the proposed headlamp aiming tolerance diagram with corrections and new appendices II and III as proposed by T.Targosinski.
17 Oct 2017 Draft conclusions of the 9th VGL session VGL-09-09 2017-10-17
23 Oct 2017 Updated draft agenda for the 10th VGL informal group session VGL-10-01/Rev.3 2017-10-23
9 Nov 2017 Participants list from the 10th VGL informal group session VGL-10-02/Rev.1 2017-11-09
9 Nov 2017 VGL chair consolidation of headlamp aiming diagram justification VGL-10-03 2017-11-09
10 Oct 2017 GRE-adopted Terms of Reference for the VGL informal group VGL-10-04 2017-10-10
17 Oct 2017 UN R48: Draft justification for deletion of the 2000 lm criterion VGL-10-05 2017-10-17
20 Oct 2017 Italy proposal to improve the justification for deletion of 2000 lm criteria (Italy) VGL-10-05/Add.1 2017-10-20 Italy
23 Oct 2017 Targosinski proposal to improve the justification for deletion of 2000 lm criteria (Poland) VGL-10-05/Add.2 2017-10-23 Poland
18 Oct 2017 Poland request for clarification of headlamp cut-off limit (Poland) VGL-10-06 2017-10-18 Additional questions from Poland to OICA for clarification the expectations concerning 1.6% cut-off inclination limits range as a result of non-repeatability of vehicles according Reg. 48 load/pitch test (Annex 5 and 6). Poland
18 Oct 2017 E-mail response of Tomasz Targosinski to the current VGL situation VGL-10-07 2017-10-18 .msg file
9 Nov 2017 UN R48: Italy counter-proposal regarding the justification for deletion of 2000 lm criteria (Italy) VGL-10-08 2017-11-09 Italy
9 Nov 2017 Revision of the GTB/OICA glare proposal in relation to type approval application (ITS) VGL-10-09 2017-11-09 ITS
9 Nov 2017 OICA headlamp aiming tolerance survey results (OICA) VGL-10-10 2017-11-09 OICA
9 Nov 2017 VGL informal group revised headlamp aiming diagram justification VGL-10-11 2017-11-09