Spliting a lanlete into multiple lanletes

Is there an easy way to split a lanelet into multiple connected lanelets? Currently I only see a option to merge multiple lanelet into one long one

Currently, there exist no function in commonroad-io for this.
You need to split the center, left, and right vertices of the corresponding lanelet.
Then, you can generate a new lanelet using the different parts.
Usually, you can reuse the other attributes of the original lanelet in the new lanelets.

We will consider this functionality for a future release of commonroad-io.