You start with signalling to show intentions, then use the mirror to checkout the wayward drivers.
Watu wa blind spot assist tuketi wapi?
Hizo ni mashida za watu wameanza kudrive juzi
Lies. Ni mzuri kujua the right thing and to make it a routine. Helps avoid accidents.
You start by checking the mirrors to determine whether its safe to turn then use the signal of neccessary. Do u knw what happens when u signal before checking your mirror, maybe someone else had already started changing lanes, and you without checking u signal and freak them out forcing to step on their brakes na kama alikua mbio that might result into a pile up accident
With newer car models they have a sensor on the side mirrors that alerts the driver that there is a car in the blind spot.
Car maintenance being what it is angalia na macho. I have reverse sensors but saa ingine nashuka kuangalia.