Honda CITY Hybrid 2021 Manual page 276

When you operate the turn signals to change lanes, the system is suspended, and
resumes after the signals are off.
If you make a lane change without operating the turn signals, the LKAS alerts
activate, and torque is applied to the steering.
uuHonda Sensing * uLane Keeping Assist System (LKAS)
1Lane Keeping Assist System (LKAS)
When it fails to detect lanes, the system will
temporarily be cancelled. When a lane is detected,
the system will recover automatically.
Continued 275