Your right
I had this happen in the Philippines when I was in Cebu
I analysed that they bip/beep their horns for no reason
So one morning I set the alarm clock for 3am in the hotel and walked to the intersection where the inyala mall is and waited , hardly any cars and then.....I spotted a guy in a sports car driving towards the red light ,no other cars in sight !
Hand on his horn beeping ,beep beep beep before he stopped at the red light
He looked over at me on the pedestrian footpath ,
I immediately pulled my shorts down turned around and gave him a brown eye
I could hear him blast his horn as he drove off into the distance with me still bent over