When jet boosters are in use, the vehicle will have difficulty turning and reversing. You will not be able to cancel the effect until one charge is fully depleted. After that, you will need to wait four seconds until the boosters are reloaded.
The parameters displayed are valid for the vehicle with each crew member trained to 100% major qualification level. Some vehicle characteristics can be further improved with the Commander's bonus to major qualification level, crew perks, and skills, as well as special in-game items.