Question about flip_flag = True if map_location.startswith('singapore')

[Shin-kyoto]

Hi! Thank you so much for your great work!

I have one question about flip_flag in vad_nuscenes_converter.py.
Why do you flip steering in left-hand traffic? When given manual driving telemetry data from Singapore and US (Miami), isn't it strange that we multiply steering data by -1 for "left turns" in Singapore but not in the US? Whether it's in Singapore or the US, a "left turn" means the car is turning left , not right.

VAD/tools/data_converter/vad_nuscenes_converter.py

Lines 497 to 500 in 70bb364

	# flip x axis if in left-hand traffic (singapore)
	flip_flag = True if map_location.startswith('singapore') else False
	if flip_flag:
	steering *= -1