My Pet Peeves as a driver in the Philippines

Cars/Trucks

Driving with high beams on.
Fog lamps as headlamps.
Turn/Brake signals not working.
Using a cellphone while driving.
Plates with colored plastic covers.

Motorcyclists

No LIGHTS!
Red Headlights
Fog lamp for headlights.
Reckless driving, i.e. cutting from blind spots, frequent lane changing.

Emergency vehicles
Driving in an emergency situation with no sirens or flashers.
Barely audible siren
The use of flashers even if it does not have an emergency.

Cyclists

Riding solo in the middle of the highway.
Occupying the whole lane when riding as a group.
Lack of reflectors or lights when night riding.