Proposal to maintain a wet grip index of 0.65 for class C3 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires.

Explanation of Dutch concerns with the IMMA proposals on the measurement of brake efficiency and the use of a representative vehicle for testing.

Status report, including the current state of the draft text, on efforts to reach agreement on the introduction of provisions for electro-hydraulic systems into the test conditions for trailers with electrical braking systems.

Proposal to correct errors and remove inconsistencies in the current regulatory text, including a correction to the formula used in Annex 12, Appendix 4 “Test report on the compatibility of the inertia brake control device, the transmission and the brakes on the trailer”.

One of the outcomes of the work on updating UN R55 was the recognition that agricultural couplings present a set of challenges distinct from other vehicles. This revised proposal takes into account comments received during the February 2016 GRRF session for the establishment of an informal working group to develop a new regulation (UN R55-A) to respond to the specific needs of agricultural vehicle couplings.

Comments concerning the clarity and utility of certain provisions in the proposal to amend the annex on complex electronic systems.

Proposals by Germany and the Netherlands to clarify trailer requirements under UN Regulation Nos. 13 and 13-H, including the removal of design restrictions that prevent the use of electro-hydraulic and electro-pneumatic braking systems.

Proposal for corrections to the text and equations.

Proposal to introduce technical requirements for Corrective Steering Functions (lane departure prevention, lane-keeping assistance (LKAS), steering angle correction, etc.) as defined in the regulation. The proposal offers four options to ensure appropriate approvals of LKAS and related CSF systems until such time as more precise requirements can be defined:

• Option 1 and option 2: Not to grant any type approvals for corrective steering functions until detailed technical requirements for CSF are incorporated into this Regulation.
• Option 3: Amend the definition of CSF as proposed in this document.
• Option 4: Amend the definition of corrective steering functions and to include technical requirements for LKAS as an ASCF of Category B1 as proposed in this document.

Proposal to delete a redundant requirement. The paragraphs 2.2. and 2.2.1. are superfluous since paragraph 5.2.2.13. already requires all O4 trailers to be equipped with Anti-lock Braking Systems (ABS) of Category A.

Proposal to update UN R61 to conform with current procedures concernings revisions, extensions, and withdrawals of approvals.

Proposal to update UN R61 to conform with current procedures for revisions, extensions and withdrawals of approvals. This document supersedes document GRSG/2011/22 and informal document GRSG-102-05.

Revision 3, Amendment 3 of UN R107 deletes all references to Regulation No. 66 on the strength of the superstructure of buses and coaches. This proposal would delete a further reference not originally specified in Amendment 3.

As part of investigations into a bus accident involving CNG container ruptures, the Netherlands would like to know whether other countries have experienced fires in CNG vehicles and what measures have been taken to reduce the potential risks.

This compendium of case studies is provided in response to a question raised by the French delegation to the Amendments proposed to Regulation 110 pertaining to the use of LNG as a vehicular fuel.

Document prepared by the Chairman of the LNG Task Force (Netherlands) to respond to questions raised by France concerning the proposed LNG amendments to UN R110 (document GRSG/2013/7).

Text prepared by the Chairman of the LNG Task Force (Netherlands) in response to concerns raised by France regarding the possibility of overfilling an LNG system. This amendment to the proposal to introduce LNG provisions into UN R110 (document GRSG/2013/7) matches ISO requirements covering the same issue.

Text prepared by the Chairman of the LNG Task Force (Netherlands) in response to questions raised by France concerning the proposed amendment to introduce LNG provisions into UN R110 (document GRSG/2013/7). The amendments aim to improve the internal consistency of the proposed amendments.

In response to a bus accident where a pressure relief device produced a horizontal jet flame lasting several minutes, the Netherlands offers possible changes to CNG component and bus safety regulations.

Proposal to regulate the discharge direction of pressure relief devices (PRD) on CNG containers in response to a fire accident in the Netherlands in which the PRD produced a long horizontal jet flame for several minutes posing a risk to other road users and surrounding buildings.

Supplement 1 to the 01 series included requirements for the positioning of LNG tanks. While the Netherlands believes that mounting the LNG fuel tank 200mm above the road surface is broadly adequate; this proposal aims to ensure that the fuel tank cannot, under any normal driving or stationary working situations, come into contact with the ground. The new wording provides more definitive conditions, including the possibility of a vehicle having one or more flat tires as well as for those vehicles that have ‘kneeling’ capability or variable suspension, both of which lower the frame of the vehicle closer to the ground.

Proposal to revise the text of document GRSG-107-25 on fire suppression systems to ensure that the provisions can be applied fully to natural gas and/or hydrogen-powered vehicles.

Corrections to the proposal to clarify the provisions of Chapter 18 following the introduction of automatic valves (see report GRSG/84, para. 38).

Proposal to add information reporting requirements for type approval of camera-monitor systems of classes I to IV to the proposal for a Supplement to the 04 series of amendments to UN R46 (document GRSG/2015/2).

Consolidated revised version of UN R46 introducing provisions prepared by the Informal Group on Camera-Monitor Systems (IGCMS-II) to introduce the optional replacement of mirrors of Classes I to IV by camera-monitor systems.

Proposed corrections to the original proposal to align UN R105 with ADR 2017.

Proposal of corrections to document GRSG/2016/7. The wording of the original proposal opens the possible interpretation that the regulation allows materials other than copper, stainless steel, or steel with corrosion-resistant coatings for gas tubes. The intention of the proposal was only to allow for “non-seamless” gas tubing. The original proposal is therefore modified to allow Class 0/I hoses with couplings using gas tubes of other than seamless material.

Editorial amendment to document GRSG/2016/8 for clarity. The original proposal would allow the use of Class 0 hoses with couplings using sealing technologies other than those with a 45° cone provided that the hose assembly can withstand the impulse test of paragraph 1.7. and the tests of Annexes 5A (overpressure test) and 5B (external leakage test). This proposal clarifies that the original sealing-cone specification or other compliant couplings, including designs with soft seals (e.g., O-ring) provided they pass testing described in Annexes 5D, 5F, and 5G.

Proposal to amend the provisions of UN R67 (R67) in order to enable the approval of non-seamless double and single wall gas tubes provided they can withstand the applicable tests according to Annex 15.

Proposal, as modified pursuant to discussions during the October 2016 GRSG session, to amend the provisions of UN R67 (R67) in order to enable the approval of non-seamless double and single wall gas tubes provided they can withstand the applicable tests according to Annex 15.

Proposal to correct the definition of “manual valve”, including deletion of the phrase “rigidly fixed to the cylinder or tank”.

Proposal for further discussion concerning technical advances in the use of CNG accumulators as an intermediate technology for promoting high, stable pressure in CNG engine injection systems. The CNG accumulator is used to stabilize the gas pressure and to allow engine operation whenever the LNG supply system is not able to deliver fuel. This proposal would define requirements to enable the certification of these components.

Proposal for discussion to enable the certification of CNG compressor components. Due to density and temperature constraints, LNG fuel systems require technologies to warm the LNG fuel to reach temperatures and pressures suitable for the engine. In some configurations, this involves the use of CNG compressors. Therefore, this proposal seeks to enable use of this technology through establishment of requirements to ensure safety.

Proposal to clarify the test procedure to be applied in assessing compliance with the requirement for “compatibility with heat exchange fluids of non-metallic parts” Annex 5Q is part of UN Regulation No. 110. In Annex 4D, the wording “Compatibility with heat exchange fluids” is used but there is no reference to the applicable tests. The proposal clarifies that the “LNG heat exchanger – vaporizer” falls within Annex 5Q. The proposal correspondingly clarifies the general overview Figure 1-2, with all tests from Annex 5, and Table 5.1 in Annex 5.

Proposal to correct the omission of Class VII devices from the communication form described under Annex 3 of the regulation.

Updated proposal to correct the omission of Class VII devices from the communication form described under Annex 3 of the regulation.

Proposal to require marking of extension numbers on accessories relevant to the UN R67 bonfire test (e.g., multivalve, pressure relief valve, pressure relief device) in order to prevent/prohibit the misuse (in container configurations) of these accessories. The proposal includes provisions for components where such marking is impractical based upon text drawn from UN R46.

Proposal to introduce requirements for CNG compressor and CNG accumulator components designed to maintain stable pressure in fuel systems. See also documents GRSG-113-24 and 25 from the previous GRSG session.

Proposal to allow the use of a generator fueled by the vehicle gaseous fuel system that provides electricity to run accessories (e.g., overnight power in sleeper cabs, to maintain battery charge during high electrical power use with loading or lifting equipment). This proposal would allow for the use of LNG/CNG from vehicle fuel tanks and thereby reduce the potential need to vent gas into the air in response to pressure buildup due to warming over time by using the gas to power other devices and equipment.

Proposal for clarifications and editorial improvements to the draft amendment to require, in instances where that ogive covers be removed before conducting the impact damage (drop) test.

Proposal to clarify the use of the “departure angle up to 8° according to ISO 612:1978” to limit the maximum ground clearance to 550 mm.