(AP) The Maine Turnpike Authority projects that more than 635,000 cars and trucks will use the Maine Turnpike over the holiday weekend, but it won’t be a major increase over last year. Spokesman Dan Paradee says a good weather forecast, stable gas prices and signs of a slow economic recovery will be trumped to some degree by lingering effects of the recession. But roads will still be busy. On Friday alone, more than 210,000 vehicles will be on the turnpike, with more than 41,000 northbound vehicles entering at the York Toll. With the increased traffic state and local agencies will be stepping up their presence. Maine State Police Colonel Patrick Fleming says the holiday weekend is the unofficial start to the summer driving season and that police want to make it a safe one. Fleming said troopers on the ground will be supported by a MaineState Police aircraft while on the lookout for aggressive driversand speeders.