Scooters/motorbikes (not the e-scooters you stand on). There are also various degrees of public transit. But, while there are some exceptions like Singapore, a lot of large SE Asian cities are congested sprawl that takes forever to get around.
Raleigh itself has a nice if small downtown area. But much of the remaining Research Triangle area is spread out industrial parks (as well as some university campuses, Durham), suburban residential, etc.