Identify: This attribute refers to the lane (or side of the host lane) in which the events mentioned above take place.

What to mark: This event is taking place on the left side of the host lane.

What to mark : this event is taking place on the right side of the host lane.

what to mark: The event is taking place in the next lane to the left.

What to mark: The event is taking place in the next lane to the right.

What to mark: Labeled when host vehicle is taking the highway exit (marked/SemiMarked/UnMarked) on the "right". HWE is a phrase we use, we also mark HWE on exitsfrom all road types.

What to mark:  Labeled when the host vehicle is taking the highway exit (marked/SemiMarked/UnMarked) on the Left. HWE is a phrase we use, we also mark HWE on exits from all road types.

What to mark : Labeled when host vehicle is driving over a painted crosswalk. (Not used in cases that the crosswalk is blocked off for any reason)

Identify what kind of attribute should be place the label in the other side.

What to mark: We labeled this when the host vehicle drives over cracks in the road that have been filled with tar.

What to mark: Labeled when the host vehicle drives on the designated lane for exiting the freeway.

What to mark: Labeled as the host vehicle passes a buffer zone (non driving zone, painted or paved) along the "right side of the host lane."

What to mark: Labeled when the host vehicle is driving through a tunnel. Start labeling when the vehicle enters the tunnel and stop when the vehicle exits the tunnel. 

Choose the right frame that describes the tunnel.

What to mark: A Extra long laneArrows (the body of the arrow is extra long), generally seen in Italy.  Labeled as the host vehicle drives over the arrow.