The Tappan Zee Bridge had only seven lanes, some of which were narrower than the current standard lane width of 12 feet. The new bridge will have eight, 12-foot-wide lanes and wider shoulders. The shoulders of the new crossing will greatly reduce the traffic impact of disabled vehicles and accidents, which caused massive tie-ups on the old bridge. The incline approaching the main span will not be as steep, allowing large trucks to maintain consistent speed and reduce engine and braking noise. The ability of trucks to maintain highway speed will also reduce speed differential with passenger vehicles which lessens lane changes and potential for accidents. There will also be gently banked curves to further smooth traffic flow and reduce accidents. In addition, the new bridge is being built with space to accommodate dedicated bus lanes that have been shown to reduce travel times for all vehicles. In April 2016, cashless tolling went into effect, eliminating the need for eastbound drivers to slow down or stop and idle at a toll plaza.