This episode’s vocabulary
Tram
noun — an electric vehicle that transports people, usually in cities, and goes along metal tracks in the road.
Trolleybus
noun — a public transport vehicle with rubber tyres that travels along ordinary roads in towns and is driven by electricity supplied from a wire above the road.
Rush hour
noun — the busy part of the day when towns and cities are crowded, either in the morning when people are travelling to work, or in the evening when people are travelling home.
Mercifully
adverb — luckily.
Propensity
noun — a tendency to behave in a particular way.
Proportionate
adj. — same as proportional.
Initially
adverb — at the beginning.
Trend
noun — a general development or change in a situation or in the way that people are behaving.
Major
adj. — more important, bigger, or more serious than others of the same type.
Side effect
noun — an unexpected result of a situation.
