From Kent Brown, Senior Vice President & Transportation Practice Leader, Hylant:

It's somewhat complicated. It's been a tough road for motor carriers of all sizes, including the guy with 1 truck and the guy with 5,000 trucks. They've all seen these kinds of increases in some part of their insurance program.

But in short, it's due to financial performance within the trucking insurance segment. Losses have increased by a significant amount, and outpaced premiums.

Insurance companies need to have a loss ratio with expenses included of 100% or less in order to be profitable. And as of 4 years ago, their loss ratio was about 158%. So they started to embark on a raising of rates by 25% or so per year for the last several years. That's slowed somewhat, but it's still not in the profitable area just yet.