PBC FL Cop.
Depends on the state: I'll address NY as that's where I worked previous to MA. Both the CO's and road deputy's were "deputy sheriffs". There was a different standard of training, and quilification for hiring, of each. The CO's were referred to(derogatorily)as "turnkeys", while the road deputies were what you might term "county police." So even in the sheriff's department there was a "class system", with road deps at the top of the food chain, then the CO's, then the dispatchers(the county provided the regional dispatch there, similar to the state police system here). Some counties did not have an adequate tax base to mount a road patrol: the primary function of the sheriff was to run the jail: they had no choice as to whether they would staff a jail or mount a road patrol.
Interesting side note: the sheriff was the "chief" law enforcement officer of the county...not the DA!
As far as MA goes, and with all due respect to the excellent PearlOnyx, there is no need for a road service from the sheriff here. The staties already provide those services, unlike NY where the roles are reversed!

Depends on the state: I'll address NY as that's where I worked previous to MA. Both the CO's and road deputy's were "deputy sheriffs". There was a different standard of training, and quilification for hiring, of each. The CO's were referred to(derogatorily)as "turnkeys", while the road deputies were what you might term "county police." So even in the sheriff's department there was a "class system", with road deps at the top of the food chain, then the CO's, then the dispatchers(the county provided the regional dispatch there, similar to the state police system here). Some counties did not have an adequate tax base to mount a road patrol: the primary function of the sheriff was to run the jail: they had no choice as to whether they would staff a jail or mount a road patrol.
Interesting side note: the sheriff was the "chief" law enforcement officer of the county...not the DA!
As far as MA goes, and with all due respect to the excellent PearlOnyx, there is no need for a road service from the sheriff here. The staties already provide those services, unlike NY where the roles are reversed!