But the winner is Del from KS. He trained his German Shorthaired Pointer, Jill, to sit whenever she approaches a road. To do so, he started working her on a dead end street without any traffic. He had her sit on the leash whenever they approached the road and made her stay until he said come. Now when off leash and approaching a street before Del she'll sit and wait. The benefits are obvious. As Del says, "If your dog gets hit by a car then all else is moot."