Hornsby Council traffic rangers and police are watching school zones.
A council spokesman said the council and police had teamed up to make school zones safer after feedback from parents, principals and the council's own observations highlighted a need for extra patrols.
He said while both police and council rangers already conduct regular patrols of schools, this joint operation would ensure parking and driving offences were dealt with simultaneously.
Particularly dangerous illegal behaviour around school zones includes:
■ U-turns over double lines;
■ Mobile phone use; and
■ Incorrect use of child restraints.
"Parking violations can also pose a risk to child safety, with double parking and ignoring parking signs obstructing vision and endangering young lives," the council's spokesman said.
Senior traffic ranger Jamie Chesworth said: "Our objective is to educate the parents and children, while our ultimate goal is to keep everybody safe."
Hornsby Council ranger co-ordinator Bruce Walker said: "If you do the right thing, you've got nothing to worry about."