This actually works in some cases. There is a section of I95 near me with an exit "shunt" that's divided from the main highway. The main highway has a merge w

This actually works in some cases. There is a section of I95 near me with an exit "shunt" that's divided from the main highway. The main highway has a merge where another interstate joins, and that "shunt", where you can enter/exit is protected from the merge traffic. So taking the shunt can save you 5-10 minutes when the merge point is at a standstill.