The term 'Transmission Position' refers to the GEAR that a vehicle is in when it is being driven. The crossword solutions for this term are 'GEAR' (4 letters) and 'Fourthgear' (10 letters). GEAR is a general term used to describe the different settings that a vehicle can be in while driving, such as park, reverse, neutral, and drive. Fourthgear is a specific GEAR that is used when a vehicle is traveling at higher speeds.