Lancaster city centre was gridlocked on Tuesday night with as many as three accidents bringing traffic to a standstill.
An elderly man is in a serious condition at the Royal Lancaster Infirmary after being hit by a car on Barton Road at 4.50pm.
The pedestrian, thought to be his late 60s, suffered head injuries after the accident between Durham Avenue and Wakefield Drive.
A police motorcyclist, believed to be responding to the incident, was thrown off his bike after a collision with a car at 5.07pm at the traffic lights outside Lancaster Town Hall.
The biker has been taken to the Royal Lancaster Infirmary and the extent of his injuries are not known but are not believed to be life threatening.
Dalton Square has been closed off to traffic with eyewitness reports in the area saying roads around the one-way system are gridlocked.
A cyclist was hit by a car in third incident, also on Barton Road, near the junction with Wakefield Drive at 4.58pm.
The cyclist’s injuries are not believed to be serious.