CERTAIN SCHOOL BUSES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE FOLLOWING STATES: ALASKA, COLORADO, CONNECTICUT, DELAWARE, IDAHO, ILLINOIS, INDIANA, IOWA, KANSAS, KENTUCKY, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, MONTANA, NEBRASKA, NEVADA, NEW HAMPSHIRE, NEW JERSEY, NEW MEXICO, NEW YORK, NORTH DAKOTA, OHIO, OREGON, PENNSYLVANIA, RHODE ISLAND, SOUTH DAKOTA, TENNESSEE, UTAH, VERMONT, VIRGINIA, WASHINGTON, WEST VIRGINIA, WISCONSIN, WYOMING, AND THE DISTRICT OF COLUMBIA. IN EXTREMELY COLD WEATHER, THE MICROSWITCHES USED INTERNALLY TO POSITION THE STOP ARM SIGN IN THE OPEN AND CLOSED POSITIONS MAY MALFUNCTION, CAUSING THE SIGN TO OPEN OR CLOSE IN AN IMPROPER POSITION, OR TO NOT OPEN AT ALL.