To expand on the above ... Typically it is no for hydraulic no matter what the actuation method. (There are several)
For electricly applied brakes the answer is sort of. If there is a failure of the wiring or brake at or near the individual wheel the system by design isolates that brake. If the wiring is defective closer to the front of the trailer at some place no braking signal would be delivered at all.
Best remedy for either system is a quick visual on areas that can be seen before dropping the shift lever into D.
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!