A new road rule will be introduced in September, with hefty fines for those who don't abide by it.
Drivers must reduce their speed to 40km/h when passing stationary emergency vehicles.
The new law is an attempt to keep emergency workers safe when they are outside of their own vehicle.
Those who fail to slow down will be slugged with a $448 fine and lose three demerit points.
“The new road rule will provide extra protection for all emergency workers and volunteers who respond to crashes and other incidents on our roads,” NSW Centre for Road Safety's Bernard Carlon said.
“When you see the blue or red flashing lights on an emergency vehicle stopped on the road, safely reduce your speed so that you are not exceeding 40km/h when you pass.
“Keep to 40km/h until you’ve safely passed all people and emergency vehicles."