half-track vehicle
Technical term for a military or heavy-duty vehicle with wheels at the front and tracks at the rear.
The former Japanese military operated several half-track vehicles.
装軌車 is a fully tracked vehicle, while 半装軌車 has both wheels and tracks.
装甲車 is an armored vehicle, which may or may not be a half-track; 半装軌車 refers specifically to the drive system.
Compound of 半 (half), 装軌 (tracked, from 装備 + 軌道), and 車 (vehicle). The term is a direct calque of English 'half-track'.