International Organization for Standardization (ISO)
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ISO 3853:1994
Scope
Cancels and replaces the first edition (1977). Specifies a simplified procedure for testing the mechanical strength of coupling devices fitted to towing vehicles for towing caravans or light trailers of categories O1 and O2.
ISO 3853:1994 history
1994ISO 3853:1994 Road vehicles - Towing vehicle coupling device to tow caravans or light trailers - Mechanical strength test
1977ISO 3853:1977 Road vehicles; Caravans and light trailers; Towing brackets and coupling balls; Strength test