The A14 in Cambridgeshire has been closed in both directions due to a serious crash involving one car, which occurred around 2.20am between junctions 13 and 22. Drivers are facing significant delays, with traffic queues extending back to junction 23, as emergency services, including the police, manage the situation and conduct an investigation. Motorists are advised to seek alternative routes, as the road is expected to remain closed for an extended period, affecting local traffic patterns significantly.