This video demonstrates how to add a tapered ramp to split a 3 lane, one-way road into two 2 lane roads using OpenRoads ConceptStation.
Click the video below to play it. To view in fullscreen mode, first click the YouTube link at the bottom of the video to launch the video on the YouTube site. Then, click the fullscreen button (rightmost button at bottom of video).
Additional information on ConceptStation located here: https://www.bentley.com/en/products/product-line/civil-design-software/openroads-conceptstation