From October 15, police will only be required to attend and investigate crashes if a person is killed or injured, where parties fail to exchange particulars and if a driver appears to be under the influence of alcohol or drugs.

"We are strongly urging all motorists to go online to our website and learn what to do in a crash situation," Assistant Commissioner John Hartley, traffic and highway patrol commander, said.

"Drivers may no longer need to wait for police in a tow-away-only crash and will not need to report minor collisions for insurance purposes where no vehicles are towed."

Assistant Commissioner Hartley said the new process was part of an initiative to reduce red tape and to better manage crashes on NSW roads.

"The new streamlined process is about cutting back red tape and diverting police resources into broader road safety initiatives and other investigations," he said.

Drivers involved in a crash where none of the above criteria applied can now organise their own tow, leave and later report the crash to the Police Assistance Line on 131 444.

In addition, drivers will no longer need to report minor collisions to police, even for insurance purposes.