NHTSA recommendations for the state-of-charge of the energy system of plug-in and fuel-cell vehicles at the time of testing and on the conditioning procedures prior to testing.

US proposal for sequential fault testing of battery management systems.

Presentation on NHTSA defect investigations into sunroof breakage incidents since 2004.

NHTSA note proposing that the specific battery SOC measurement procedure be determined by manufacturer in accordance with the battery design.

Proposed text for a sequential testing program to test the Battery Management System (BMS) response at the safety boundary limits of the REESS during operation. The test evaluates the ability of the vehicle’s BMS to safely monitor and control the REESS under external inputs such that there is no damage to the REESS and no hazardous conditions arise.

NHTSA presentation on the agency’s experience and investigations concerning low-speed vehicles and three-wheeled motorcycles. This presentation broadly considers very light vehicles mainly intended for local (neighborhood), short-distance transportation.

US Proposal for BMS Functionality: Sequential Fault Testing Requirements

Revised U.S. proposal for BMS functionality and sequential fault testing requirements

US proposal taking into account and responding to comments received from JRC (22 April 2016) and OICA (17 May 2016)

The US safety agency raises questions concerning the specific nature of the observed failures and the scope of the test procedures to ensure that glazing with ceramic printed areas resist such failures. NHTSA notes anomalies in the data that might suggest failure modes specific to particular manufacturers and/or production batches while questioning the focus on panoramic sunroofs rather than all glazing where ceramic printing might be a potential cause of failure.