In this manner, the brake booster {TAIL ~ 1 functions} as {HEAD ~ an automatic brake} without operating a brake pedal 
In this manner , the brake booster { TAIL ~ 1 functions } as { HEAD ~ an automatic brake } without operating a brake pedal
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH