Line-haul vehicles รถพ่วง
Used for long distance transport
Typically tractor-trailer combination with 3+ axles เกิน 3 เพลา
Typical trailer lengths are 45, 48, or 53 feet
Maximum length and weight can vary
Some states have grandfathered rights to allow more
Some loads may be more under permit
Carrying capacity: function of vehicle dimensions and density of cargo