Section 346.46 - Vehicles to stop at stop signs and school crossings(1) Except when directed to proceed by a traffic officer or traffic control signal, every operator of a vehicle approaching an official stop sign at an intersection shall cause such vehicle to stop before entering the intersection and shall yield the right-of-way to other vehicles which have entered or are approaching the intersection upon a highway which is not controlled by an official stop sign or traffic signal.(2) Stops required by sub. (1) shall be made in the following manner: (a) If there is a clearly marked stop line, the operator shall stop the vehicle immediately before crossing such line.(b) If there is no clearly marked stop line, the operator shall stop the vehicle immediately before entering the crosswalk on the near side of the intersection.(c) If there is neither a clearly marked stop line nor a marked or unmarked crosswalk at the intersection or if the operator cannot efficiently observe traffic on the intersecting roadway from the stop made at the stop line or crosswalk, the operator shall, before entering the intersection, stop the vehicle at such point as will enable the operator to efficiently observe the traffic on the intersecting roadway.(2m) Every operator of a motor vehicle approaching a school crossing which is controlled by an adult school crossing guard appointed under s. 120.13(31) or 349.215 shall follow the directions of the school crossing guard. If directed by the school crossing guard to stop, the operator shall stop the vehicle not less than 10 feet nor more than 30 feet from the school crossing and shall remain stopped until the school crossing guard directs the operator to proceed.(3) Every operator of a vehicle approaching an official stop sign at a railroad crossing shall, before proceeding on or over such crossing, stop the vehicle immediately before crossing a clearly marked stop line. If there is no clearly marked stop line, the operator shall stop the vehicle not less than 15 nor more than 50 feet from the nearest rail.(4)(a) Every operator of a vehicle approaching an official stop sign or official temporary stop sign erected mid-block on or in the roadway by local authorities under s. 349.07(6) shall cause such vehicle to stop not less than 10 nor more than 30 feet from such official sign except when directed to proceed by a traffic officer.(b) As used in this subsection "mid-block" has the meaning given it in s. 346.33(3) .1977 c. 116 s. 16; 1979 c. 344, 1985 a. 29 s. 3202 (43); 1987 a. 25; 1989 a. 359; 1991 a. 316; 2009 a. 65. A violation of sub. (1) constitutes negligence per se, but a violation may be excused through the application of the emergency doctrine, which provides that a person faced with an emergency that the person did not create is not negligent for failing to avoid the threatened disaster if compelled to act instantly. Totsky v. Riteway Bus Service, Inc. 2000 WI 29, 233 Wis. 2d 371, 607 N.W.2d 637, 97-0530.