Driving in fog is dangerous for many reasons, including the fact that visibility is limited. With this in mind, you're unable to clearly see what's going on around you.
Halloween is a time for make believe and fun. Children dress up as their favorite characters and frolic through neighborhoods in the hopes of scoring a bag full of sugar filled loot. Although most ventures from house to house result in gifts of candy, danger can lurk in others. This is particularly true for homes with aggressive dogs.
Sharing the road with trucks is part of life. No matter where you go, you know these big rigs will be in close proximity.