Grewus Acoustic Products
Expert
13 July 2021 Audible reversing warnings: Revised proposal for component-level testing (JAPIA, CLEPA, and Grewus)
TFRWS-26-02/Rev.1
TFRWS-26-02/Rev.1 2021-07-13
21 June 2021 Audible reversing warning: Comments on the draft text (Grewus)
TFRWS-23-08
TFRWS-23-08 2021-06-21
29 October 2020 Verification method for reversing warning with self-adjusting sound level (Grewus)
TFRWS-14-03
TFRWS-14-03 2020-10-29
16 October 2020 Reserving warning sound measurement: 7 m proposal (Grewus)
TFRWS-13-03
TFRWS-13-03 2020-10-16
7 August 2020 Reversing Warning Systems: Measuring Report-GREWUS "PeTer" free-field tests (Grewus)
TFRWS-11-02/Rev.1
TFRWS-11-02/Rev.1 2020-08-07
23 October 2019 Calculation of sound pressure levels at varying distances (Grewus)
TFRWS-09-05
TFRWS-09-05 2019-10-23
5 September 2019 Measurement Method Proposal for self-adjusting reverse warning devices (Grewus)
TFRWS-08-03
TFRWS-08-03 2019-09-05
24 June 2019 Measurement Report: Ambient Noises and Audible Reverse Warning Devices (Grewus)
TFRWS-06-06
TFRWS-06-06 2019-06-24
4 January 2019 Grewus comments on draft reversing warning devices regulation (Grewus)
TFRA-04-06
TFRA-04-06 2019-01-04
4 January 2019 Explanations for Grewus proposals on reversing warning device requirements (Grewus)
TFRA-04-07
TFRA-04-07 2019-01-04