As we move toward electric buses with heavy battery floors, the role of the superstructure becomes even more critical. The "second skin" must now protect against higher center-of-gravity instability and increased kinetic energy, proving that ECE R66 is a living, evolving standard for a mobile world.
Regardless of the specific nomenclature, the requirement remains the same: the superstructure must be homologated to withstand specific energy inputs without crushing the occupants. sr2 ece r66 bus skin
The aluminum or steel sheets riveted or glued to the outside of the pillars play a nuanced role in ECE R66. As we move toward electric buses with heavy
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