Oil Price Information Service (OPIS) expects 2018 gasoline prices in summer to reach its highest levels since 2014. The research conducted in USA foresees drivers paying around %16 higher for gasoline in April compared to last year. Oil prices almost always show an upward trend in March, with transportation perking up and refineries entering into maintenance period, but analyists anticipate this year’s increase to end up comparatively higher than previous years, especially with the impact of external factors, principal ones of which are steadily increasing oil prices and market speculators. – The Wall Street Journal