No the qoute above is from Legaldatabase.com, just like I cited. I am not sure what you are confused about beings all my sources are cited and quotes are from the Code books or Legal Data Base?It is not my language. Here is the Idaho code for DUI:
Idaho Code 18-8004
Notice section (5):
(5) "Actual physical control" as used in this section, shall be defined
as being in the driver's position of the motor vehicle with the motor running
or with the motor vehicle moving." This is what the law says and has been upheld by the Idaho Supreme Court as well as the 9th Circuit Court of Appeals, I do not see what is gray about it.
The particular part you quoted is also from Legaldatabade.com, and refers to accident investigation. In most states if an officer responds to an accident, lets say it is a single vehicle and the driver is out of the car when the officer arrives sitting on the curb intoxicated the officer can still investigate him for DUI.
See Idaho Code 49-1405:
Idaho Code 49-1405 This code gives the officer the same authority to arrest for certain offenses as though they were felonies regardless of their actual class of crime. And another Idaho Code gives an officer authority to arrest at the scene of an accident investiagtion for offenses that otherwise he would have to witness himself.
Give me a specific about what you are unclear of as nothing I have said is my opinion, I have either stated/quoted law or others legal opinion.