Lukegao1
创建页面，内容为“A DOT number, or Department of Transportation number, is a unique identifier assigned to commercial motor carriers and companies that transport goods or passengers across state lines in the United States. Here's a step-by-step guide on how to apply for a DOT number: 1. Determine if you need a DOT number: Companies that operate commercial vehicles transporting passengers or hauling cargo across state lines are required to obtain a DOT number. You may also need…”