Note 6. Commitments and Contingencies We are a party to certain claims and pending litigation arising in the normal course of business. These proceedings primarily involve claims for personal injury or property damage incurred in the transportation of freight or for personnel matters. We maintain insurance to cover liabilities arising from the transportation of freight in amounts in excess of self-insurance retentions. Our self-insurance retention for auto liability ranges from $1.0 million to $2.0 million per occurrence depending the applicable policy year. Our self-insurance retention for workers  compensation claims is $500,000 per occurrence. Based on our present knowledge of the facts and, in certain cases, advice of outside counsel, management believes the resolution of claims and pending litigation, taking into account existing accrued amounts, will not have a materially adverse effect on us. We also are involved in certain class action litigation in which the plaintiffs allege claims for failure to provide meal and rest breaks, unpaid wages, unauthorized deductions, and other items. Based on its knowledge of the facts and advice of outside counsel, management does not believe the outcome of this litigation is likely to have a materially adverse effect on us. However, the final disposition of these matters and the impact of such final dispositions cannot be determined at this time.