More than 100 pedestrians were sent walking home with fines yesterday following a police crackdown across some of the busiest parts of Sydney.

In just six-and-a-half hours police fined 103 pedestrians $75 for being caught jaywalking.

In NSW it is illegal to cross the road while a pedestrian light is red and people may only cross when it is green.

Pictures of the crackdown in action were uploaded to Facebook by the Traffic and Highway Patrol Command NSWPF, but not everyone was impressed with the efforts of police.

“What a joke, money for the coffers,” one person wrote.

“One day they will start giving penalties for consuming oxygen more than a limit,” another said.

Police said the operation is part of efforts to reduce the road toll in Sydney and urge all road users, including pedestrians, to be careful.

"With the road toll currently sitting at 171 lives lost, which also includes 26 pedestrians and 5 cyclists, all road users are urged to share the road safely," the post read.

While not everyone agrees with the pedestrian fines, many praised police for their efforts.

"This is good police work. I'm sick of having to brake and dodge pedestrians crossing wherever they like and at random times," one person said.

Another person suggested they should focus on people who use their phones while crossing the road.

"How about fining pedestrians for using mobile phones when crossing roads. I have seen people in deep conversation start crossing the street without even looking," they wrote.