yes, we've permitted a dog search but in the cases that we have, sobalace and others, it was done siemmultaneous with the traffic stop, correct. >> correct. >> you said in your brief, a dog sniff is not a police entitlement to which the fourth amendment limits have been. is there a line that we should draw at how long citizens should be kept by the side of the road? >> i think that the -- all right. >> so announce what that line is. that's what i think everybody is has been asking you. >> the line is -- i can start off with perhaps the johnson case again. when the stop is basically -- when the stop is done. >> why don't you just do a simple test. if you're going to do a stop, you can't reasonably extend or pass the time it takes to deal with the ticket correct? that would be the simple rule? >> i think that the simple rule if i may propose one is the same one that professor lafave has per proposed. the officer sees the infraction. the officer pulls the person over. the officer tells the person what the infraction is. he does the license, registration, runs the car. when that is done, he gives th