This standard specifies that for reciprocating internal combustion engines, especially reciprocating internal combustion engines for marine and railway traction, the action direction of the manual control mechanism for speed regulation and reversing has nothing to do with whether the operator is close to or far away from the engine. Control valves for liquids and gases are not included.
GB/T 4672-2003 history
2003GB/T 4672-2003 Reciprocating internal combustion engines--Hand-operated control devices--Standard direction of motion