Plain-language explanations of permits, escorts, temporary permits and weight limits, each cited to the official rule and linked to the tool that applies it.
A trip permit covers one short run into a state you are not apportioned for. IRP and IFTA cover the long haul. Here is how to choose, what to carry and what to avoid.
What a pilot car does, what triggers an escort, when the front car carries a height pole, and how to read the escort line on a permit, with Texas, Washington and New York examples.
A state oversize permit is a contract with conditions. Here is what each part means, from permitted dimensions and route to hours, escorts and holiday rules.
How the federal bridge formula in 23 CFR 658.17 limits weight on every group of axles, with worked examples you can check yourself.