MOTORISTS ARE ADVISED TO BE EVER VIGILANT WHEN TRAVELING BEHIND OVERSIZE VEHICLES SUCH AS TRACTOR TRAILER UNITS HAULING TRAILERS, SCHOOL & VILLAGE BUSES OR OTHER  VEHICLES SIMILAR IN NATURE UNLIKE CONVENTIONAL SIZE VEHICLES, THAT FOLLOWING A SNOW OR ICE STORM GET BRUSHED OFF, THESE VEHICLES OFTEN ACCUMULATE SNOW AND ICE THAT ON SUNNY DAYS, MELTS AND BREAKS LOOSE. AS THE VEHICLE TRAVELS DOWN THE HIGHWAY  THESE CHUNKS OF ICE BECOME EXTREMELY DANGEROUS PROJECTILES THAT WILL EASILY SHATTER THE  WINDSHIELD OF A VEHICLE TRAVELING BEHIND IT. BE A CAUTIOUS DRIVER AND EXTEND THE CUSTOMARY "1 MISSISSIPPI 2 MISSISSIPPI" RULE TO "4-6 MISSISSIPPIs", GIVING YOURSELF EXTRA  DISTANCE BEHIND THESE VEHICLES ESPECIALLY ON THE INTERSTATE WHERE SPEEDS  ARE INCREASED AND THE ICE WILL TRAVEL A FURTHER DISTANCE FROM THE VEHICLE IT HAS COME OFF FROM.