Thunderstorms are usual occurrences, especially during the onset of summer. However, the area does experience some dry weather generally in the months of June and July (see Reference 1). The North Slope region experiences fog, winds, and cold weather frequently. Snow is a common occurrence and it can snow any time of the year. The ground in most parts of northern Alaska is permafrost (permanently frozen), which means a water layer always exists below the surface.
The Dalton highway is dangerous with its narrow road, steep hills, sharp twists and tall embankments. Loose gravel in many areas also pose substantial danger. Pointed rocks are common on the road as well. Depending upon the weather conditions, you may come across slippery mud, pot holes, snow or ice. Keep an eye out for flying rocks too!
Proximity of the road to forest areas makes it susceptible to uncontrollable wildfires which can reach the highway. Wild flames and dense smoke make traveling dangerous. Keep on the lookout for large puffs of smoke and make sure to pull over if you find yourself in that situation.
Bears, moose, muskoxen, wolves, and fox are predominant. Accidents have been caused by animals crossing the road when the driver doesn't see them. Drivers are always warned of bear and wolf attacks. More people are injured by moose than any other mammal in Alaska. Be wary of large animals running out on to the roadway. In such a situation, slowly pull over to the side, if possible, and let the animal pass (see Reference 4).
Heavy-load trucks plying the steep-sided road on the Dalton highway are a major danger. As per Dalton road rules, big trucks always have right of way (the legal right to move ahead of other vehicles). Non-truck drivers are requested to yield and allow for the big trucks to pass first. Sometimes, trucks may need to violate general safe road rules to balance their load weights.
