Task Force on Reverse Warning Sound Issues (TFRWS)
Reports to GRB, GRBP

Task force established in September 2017 to develop specifications for reversing alarms, based on a proposal (document GRB-66-07) from Germany and Japan. Japan agreed to chair the group. France, Germany, Netherlands, Korea, Turkey and the European Commission have expressed interest in developing the regulation for medium-heavy vehicles. This initiative complements work by GRSG on camera-monitor systems requirements under UN R46. Interest has also been expressed in parking sensors for light vehicles.

Meetings Documents Regulations
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Documents 2020
2021 2020 2019 2018
23 Jan 2020 Draft status report of the Reversing Warning task force to GRBP TFRWS-10-02/Rev.1
27 Jan 2020 Presentation on "Bruitparif": Road noise in the environment TFRWS-09-06
29 Jan 2020 Reversing warning system measurement setup proposal TFRWS-10-04
3 Feb 2020 Status report of the Reversing Warning Task Force to GRBP TFRWS-10-03/Rev.1
4 Feb 2020 TFRWS: Draft minutes of the 9th session TFRWS-09-07
1 May 2020 Draft agenda for the 11th Reversing Warning Task Force session TFRWS-11-01
25 Jun 2020 Reversing Warning: Japan results from validation tests TFRWS-11-03
26 Jun 2020 Draft minutes of the 10th Reversing Warning Systems Task Force session TFRWS-10-05
7 Aug 2020 Reversing Warning Systems: Measuring Report-GREWUS "PeTer" free-field tests TFRWS-11-02/Rev.1
7 Aug 2020 Reversing Warning: Remaining issues and work plan TFRWS-11-04/Rev.2
23 Sep 2020 Invitation and agenda for the 12th Reversing Warning Systems task force session TFRWS-12-01
29 Sep 2020 Reversing warning system field test outcomes TFRWS-12-03
8 Oct 2020 ISO 9533-Section 7.1.1: Recorded dB values TFRWS-12-04
8 Oct 2020 Sound measurement uncertainties: Test set-up for second validation program TFRWS-12-05
8 Oct 2020 Draft minutes of the 11th Reversing Warning Systems task force session TFRWS-11-05
14 Oct 2020 Reversing Warning Systems: Proposal for a draft text TFRWS-12-02/Rev.2
14 Oct 2020 Invitation and draft agenda for the 13th Reversing Warning task force session TFRWS-13-01
15 Oct 2020 Draft minutes of the 12th Reversing Warnings task force session TFRWS-12-06
16 Oct 2020 Additional comments on the draft reversing warning sound text TFRWS-13-02
16 Oct 2020 Reserving warning sound measurement: 7 m proposal TFRWS-13-03
24 Oct 2020 Draft agenda for the 14th Reversing Warning task force TFRWS-14-01
24 Oct 2020 Reversing warning: Test results at 7 m TFRWS-13-05
29 Oct 2020 Draft minutes of the 13th Reversing Warning task force session TFRWS-13-06
29 Oct 2020 Reversing Warning testing: 2nd industry validation program protocol TFRWS-14-02
29 Oct 2020 Verification method for reversing warning with self-adjusting sound level TFRWS-14-03
29 Oct 2020 Invitation and draft agenda for the 15th Reversing Warning task force session TFRWS-15-01
5 Nov 2020 Draft minutes of the 14th Reversing Warning Sounds task force session TFRWS-14-04
5 Nov 2020 Proposal regarding self-adjusting warning sounds TFRWS-15-02
5 Nov 2020 Additional comments on the draft reversing warning sound text TFRWS-15-03
5 Nov 2020 Reversing warnings: Study of ”Low level" lower limit TFRWS-15-04
27 Nov 2020 Invitation and agenda for the 16th Reversing Warning task force session TFRWS-16-01/Rev.1
27 Nov 2020 Reversing warnings: Proposal for self-adjusting alarm TFRWS-16-02
27 Nov 2020 Attendance list from the 15th Reversing Warning task force session TFRWS-15-06
7 Dec 2020 Reversing warning system: Comments of the draft text TFRWS-16-03
7 Dec 2020 Reversing warnings: Study of low-level sound lower limit TFRWS-16-04
7 Dec 2020 Reversing warning: Working draft text for a new UN Regulation TFRWS-16-05
7 Dec 2020 Reversing warnings: Comments on the draft text for a UN Regulation TFRWS-15-03/Rev.1
7 Dec 2020 Reversing warnings: Comments on the working draft UN Regulation TFRWS-15-03/Rev.2
7 Dec 2020 Report of the 15th Reverse Warning Sound Issues task force session TFRWS-15-07
16 Dec 2020 Invitation and draft agenda for the 17th TFRWS task force session TFRWS-17-01