A taxi cab is a vehicle that transports you to a certain destination. They are mostly found in bigger cities but other forms of transportation and ridesharing companies exist all over (Uber, Lyft, etc.)
Positive: Dreaming of a taxi in a dream could represent being guided through a path to your destiny. It could represent the Lord transporting you from place to place.
Negative: Seeing a taxi in a dream can represent making quick or hasty decisions. It could represent error in your thinking.
(Proverbs 16:1; Psalm 25:4; Proverbs 12:15).