A judge can order a discharge without conviction if it is found the consequences of a conviction would outweigh the gravity of the offending.
Judge Moses said Saili's case passed the test but ordered him to pay $1000 to a driving road safety charity and disqualified his licence for six months.
"You have the capacity to make a positive contribution to New Zealand society in the future.''
Saili has also volunteered to undergo a defensive driving course.
He was pulled over on Auckland's southwest motorway in April, on his way to a Blues team appointment.
Saili had only just received a notice that he had been suspended from driving for 28 days after racking up too many demerit points.
"It appears you were unable to arrange anyone else to transport you to the appointment and you made an unwise decision,'' Judge Moses said.
He said he accepted Saili was sorry for what he had done and had pleaded guilty at an early opportunity.
Saili's application for a discharge was not opposed by police.
Senior prosecuting Sergeant Paul Watkins said the charge was serious but a discharge without conviction was an "even-handed'' application of the law.
Saili will now undergo an internal investigation by the New Zealand Rugby Union.
He declined to comment as he left court today.