Transportation/ˌtrænspərˈteɪʃn/ Definition 1 of 4Pro Tip 1/3Public vs Private Distinguish between public buses and private cars when discussing transportation options. I prefer public transportation to avoid parking hassle. Pro Tip 2/3Environmental Impact Discuss how different modes of transportation affect the environment. Biking is a form of transportation that's eco-friendly. Pro Tip 3/3Safety Concerns Safety is often a topic in transportation conversations, like seatbelts in cars. Transportation safety regulations are strict for airlines.