Complex sentence: In Maryalnd's state highway system, every state-maintained road is assigned a route number in the state's primary numbering system as Maryland does not have a secondary system as with other states.
Split into simpler sentences: In Maryalnd's state highway system, every state-maintained road is assigned a route number in the state's primary numbering system. This is due to the fact as Maryland does not have a secondary system as with other states.