I have often wondered how the mapping programs handle multiple lanes moving at different speeds. Sometimes my highway exit backs up for a mile, while there are

I have often wondered how the mapping programs handle multiple lanes moving at different speeds. Sometimes my highway exit backs up for a mile, while there are four lanes next to it moving full speed. All of the maps programs show this as blue (no traffic) even though I am moving at ten miles per hour. I’m guessing that they don’t have the ability to distinguish speed by lane.