To dream that your are hailing a cab, suggests that you need to ask for help in order to be able to move forward in some waking situation.

To dream that you are in a cab, indicates that you are being taken for a ride. Someone is taking advantage of you.

To ride in a cab in dreams, is significant of pleasant avocations, and average prosperity you will enjoy.

To ride in a cab at night, with others, indicates that you will have a secret that you will endeavor to keep from your friends.

To ride in a cab with a woman, scandal will couple your name with others of bad repute.

To dream of driving a public cab, denotes manual labor, with little chance of advancement.

Dreaming of riding in a cab by yourself means happiness and satisfaction with what life has to offer. Dreaming of riding in a cab with others means scandal and gossip. Dreaming of driving a cab means that you are in a dead-end job with little chance of advancement. It is time to set your sights on higher goals.

All things that flow and grow were regarded in early religions as a symbol
of life: fire represented the vital craving for nourishment, water was chosen for its
fertilizing powers, plants because of their verdure in spring-time. Now, all—or
very nearly all—symbols of life are also symbolic of death. Media vita in morte
sumus, observed the mediaeval monk, to which modern science has replied La vie
c’est la mort (Claude Bernard). Thus, fire is the destroyer, while water in its
various forms signifies dissolution, as suggested in the Psalms. In legend and
folklore, the Origin of life—or the source of the renewal of the life forces—takes
the form of caves and caverns where wondrous torrents and springs well up (38).

Love for adventure, need for more freedom and open spaces are the notions hidden behind a dream of being an adventurer. You might be wanting to look for new horizons but always keep in mind the consequences of your actions.