Trip is signed just like vacation or holiday: open both hands, palms facing each other, and rest the thumbs above your chest around armpit level, as if you're tucking both thumbs under the top of your overalls and just relaxing. Then move your hands forward and back, touching your imaginary trouser tops with your thumbs a few times.
Teach your baby or toddler the trip sign when your family is preparing for a long weekend break, a special holiday, or summer vacation.
Use the trip sign when you are trying to expand your baby's vocabulary. Do it contextually as your family begins to prepare for high holidays, or simply when you are taking a road trip to go camping or touring across state borders.