Use your Hazard Lights as "thank you" or "sorry".

[basti08]

Dapat pausuhin to dito as sign of courtesy.



And apparently, not only in Japan can you find this, based on the comments on the video.

[d'flash]

nice, sana may ganyan din dito sa pinas..

[iceman_uel]

Whoa, astig. Gives me goosebumps just seeing how polite they are.

[oj88]

Thread already exists: http://tsikot.com/forums/traffic-law...u-japan-92799/

[d'flash]

Whoa, astig. Gives me goosebumps just seeing how polite they are.

naramdaman ko din

[basti08]

Thread already exists: http://tsikot.com/forums/traffic-law...u-japan-92799/

Sorry, my bad. *blink* *blink*

You can start this here in the Philippines D'flash, that aint a prob

[yapoy86]

spell ASA..... P H I L I P P I N E S.... ASA ka pa

[stickers]

Sorry, my bad. *blink* *blink*

You can start this here in the Philippines D'flash, that aint a prob

if we got spare time to use hazzard hehe.. nasanay na kasi tayo yung taas lang ng kamay as sign of thank you.

[Retz]

dito sa pinas, alang thank you or blink blink baka bigyan ka pa ng dirty finger.

[babynos01]

According to the video if i'm right :

In Japan : "honk honk!" (means you can pass and take my lane)
In Pinas : "honk honk!" (means GET OUT OF MY LANE!)