 Some short extensions to the system were opened in 1907, and in 1908 a line to Craig Pier on the River Tay began operating.Five more double deck trams, this time with covered tops, were added to the fleet, two from Brush Electrical Engineering Company of Loughboprough in 1907 and three from G C Milnes, Voss and Company of Birkenhead in 1908.The Corporation also tried running trolleybuses in 1912, but the service was short-lived, and closed again in 1914.