Complex sentence: One day when Tootle is driving the railroad he hops off the tracks to play in the meadow but sees red flags everywhere in the grasses and he is upset due to having to stop at red flags; trains hate nothing more than stopping.
Split into simpler sentences: One day when Tootle is driving on the railroad, he hops off the tracks to play in the meadow but sees red flags everywhere in the grasses. He grows frustrated at having to stop at red flags; trains hate nothing more than stopping.