subject to severe traffic congestion; very congested
a crash left commuters stuck in gridlocked traffic for three hours
the region is home to three of the five most gridlocked cities in the world
with car parks closed and no facilities open, roads became gridlocked
caught in a situation where no progress can be made because opposing factions are in stalemate
a politically gridlocked Congress may not be able to pass any rate-setting policies over the next two years
reform remains gridlocked in Washington