The heading above rule 168 (1) saying it relates to 'careless' driving. In rule 168 (1) the word 'and' should definitely not be there because it would change the whole meaning of the rule. If 'and' was put there the stewards would have to prove every word in that rule to find a driver guilty! You are right though, it is significant the word 'reckless' is thrown in there and means the stewards don't have to prove intention for rule 168 (1).