This standard has been revised by ISO 16121-4:2011
Abstract
ISO 16121-4:2005 applies to the driver's workplace in low-floor line-service buses designed for the carriage of passengers, comprising more than eight seats in addition to the driver's seat, and having a maximum weight exceeding five metric tonnes and an overall width exceeding 2,30 m.
It gives the minimum requirements for the cabin environment.
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