Why is my commercial truck insurance cheaper than my personal truck insurance?

Your commercial truck insurance might be lower for a number of reasons. One of the most common reasons is that your commercial truck is part of a group of insured trucks. If you work for a larger company, you may get a nice discount because of the bulk of truck insurance that is purchased through your company. If you have had an accident in your personal truck since you got your commercial truck insurance, this could also cause your personal truck insurance rates to jump up significantly when compared to your commercial truck insurance rates.