For security purposes,
SOS and DAT option can only be accessed from outside Gables Transport, Inc's network for authorized user.
If you are not an SOS or DAT authorized user, unfortunately you could not get into the application.
The option "Fleet Locate" is only for authorized users too and can be accessed from any where.
From here, Gables Transport, Inc's users can access their email and other necessary apps as calendar (to organize your schedule and share events with friends), drive (to create, share and keep all your stuff in one place) with unlimited of space, etc.