The immensity of the United States makes air travel common place.The passenger train network cannot compare with its European counterpart in terms of (1)_____________ and (2)_____________.
On major routes between large centers there are even shuttle services---up to 50 flights daily--- which make one think of bus more than air transport.
All you need is a boarding pass to get a seat on the next plan.You'll pay on rout.Fares are comparatively low and numerous discount air fares are available.Safety regulations limit the sizes of carry-on luggage and personal belongings such as briefcase
,umbrellas,hat boxes,cameras,musical instrument packages,etc.So that they may be put under a passenger seat or in an overhead cabin compartment.(3)______________ in the overhead compartment is dependent on the weight of the baggage.Baggage that does not qualify as free allowance will be charged for published tariff rates.