I will choose the second one (7th obs) because it belong to the Percantage=100 from Veh dataset (6th obs), usually the Percentage =(0,100) or (25,75) which is the blame percentage of crash, to distinguish who is guilty or innocent (from Veh dataset) where the crash involve single vehicle or multiple vehicles. (Par dataset) includes the participants info. e.g PrtyType (Driver, Passenger, pedestrian ...).Therfore, when there are (two entries in the Par dataset, both of them are driver) meaning there should be two vehicles involved in the crash. First one 0% and the second 100% in this example.
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