When drivers are involved in unions, they have to respect different trucking industry regulations. Moreover, each union is different and each driver of tractor trailers needs to read the agreement before deciding to join.
Over the Road (OTR)
Over the road truckers probably have the higher salary. This is mostly due to their long stay on the road and mostly providing cross-border shipments.
There are the hours of service involved here as well. For instance, Walmart is the company which offers the biggest pay.
To emphasize, the company offers an average $71,500 salary on a yearly basis without the bonuses.
Over the road drivers also haul under higher standards. For instance, they have tight schedules they have to respect while traveling abroad.
Specialty Drivers
The specialty drivers are hauling specialized transportation, overloaded transportation, and hazmat materials.