While not required, if the motor carrier configured the driver user account to authorize a special driving category, then the graph-grid will overlay periods using a different style line (such as dashed, dotted line, or shading) in accordance with section 22.214.171.124(c)(1) of the ELD Functional Specifications. The appropriate abbreviation must also be indicated on the graph-grid.
If the motor carrier does not configure the driver user account to authorize special driving categories, then the driver must annotate the beginning and end of the applicable special driving category.
Did this answer your question? If not, please email ELD@dot.gov or call 1-800-832-5660 for more information.