how do you define swerving?

[ZENMasterTYL]

"Moving one lane to the left or right is not swerving, no matter where on the road you do it. And it is even less of a violation when you do it with a signal. Swerving is defined as shifting 2 or more lanes very quickly"

got this in topgear ph

2. Swerving is not a traffic violation. It is defined as a movement wherein vehicles shift from a lane to another. However, it can constitute the offense of reckless driving if it is done without precautions (e.g. swerving in an abrupt and careless manner, swerving without the use of signals).

MMDA guide: 10 things every driver should know - Tip Sheet | TopGear.com.ph

from mmda website:

Swerving is not a traffic violation per se. It is defined as a movement wherein vehicles shift from a lane to another. However, it can constitute the offense of reckless driving if it is done without precautions (e.g. swerving in an abrupt and careless manner, swerving without the use of signals, swerving across solid lines).

Swerving can also constitute the offense of Disregarding Traffic Signs if there are signs present that explicitly prohibit swerving in the area.

http://www.mmda.gov.ph/faq.html#page-1