No. The roadway is not set up for pedestrians at all. You'll have to take some sort of transport. As you know, the easiest will be the AKL bus out of AK, if you are at that park, of course.
Otherwise, you can transfer from the bus you are on, at DTD to the AKL bus.
If you are using WDW transport in the second scenario (needing to transfer) allow at least one hour before your ADR to get there on time.