54. What does “infrastructure” in Vehicle-to-Infrastructure refer to?
(A) Traffic facilities and information systems.
(B) The basic structure of roads and bridges.
(C) Knowledge and regulations about safe driving.
(D) The traffic department of the government.
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統計: A(93), B(26), C(26), D(10), E(0) #563533
統計: A(93), B(26), C(26), D(10), E(0) #563533