This　paper　aims　at　providing　valuable　references　for　managers＇　decision-making　as　well　as　researchers　and　engineers＇　further　researches　with　a　comprehensive　survey　on　urban　city　traffic　signal　control.　Urban　transportation　system　in　China　is　different　from　other　countries,　as　it　is　a　complex　mixed　system　which　is　composed　of　surface　way　network,　expressway　network,　and　their　integration-expressway　ramps,　running　mixed　traffic　flow　of　vehicles,　bikes,　and　pedestrians.　Therefore,　the　urban　traffic　control　system　is　a　large　complex　nonlinear　system　which　poses　many　new　problems　and　challenges　for　traffic　signal　control　methods.　This　paper　extensively　analyzes　the　research　development　of　traffic　signal　control　methods　in　surface　way　and　freeway　networks,　and　introduces　the　current　and　potential　issues　of　the　management　of　traffic　congestions　happening　in　the　networks.