Jasper in general is a protective stone. A traveler would be wise to choose a yellow jasper as a stone, its protective properties are likely to assure safe traveling conditions. Yellow jasper can also be used to you astral travel.

Yellow jasper's energies are compatible with the healing properties of the sun. This healing stone can also be used to tap into knowledge stored in the instinctual gut (solar plexus) chakra. Yellow jasper can also help to repair damage to the auric field in the lower extremities of the physical body.
Good for confidence, luck, success, inspiration, protection, visualization. Different colors of jasper do different things. There are red, yellow, ocean, green and brown jasper.