60 km/h is easy to do as it is easy to do 61 km/h.
door,
other way round. I don't know about others but i find it ludicrous to have to focus more on my speed than on the road. It's easy to look into the rear vision mirror or at the traffic & find yourself a few K's over the limit plus, the GPS speed varies from the odometer indicated speed. Drive a tiny bit slower & someone overtakes & bam, there goes the concentration on the speed & right away your 5 K's over the limit or under. Speed signs are an indicator for supposedly safe driving but that goes out the window if some impatient galah cuts in front of you or doesn't let you change lane to head for your exit road. I've found traffic Police pretty good, it's the Cops who act so unforgiving.

I think of how much safer our vehicles are for the sake of motor racing. What irks me is people speeding on modified scooters. I remember one kid killed a few years back for the sake of a faulty brake.

So no explanation as to why 60 is safe and 61 unsafe?

In fact the safest speed is what the surrounding traffic is doing. Controlled studies have shown that doing somewhere between 95% and 110% of the posted speed limit is the safest speed. Most speed accidents occur outside that range, especially accidents causing death.

We should also note, in regards to doog's belief that doing the government mandated speed will reduce road deaths to zero, that not all accidents are speed related. Indeed the number is less than 50% being speed related and even that number is dodgy since it counts all accidents that had speed as a factor as being caused by speed.

And if we are getting into issues of a few kilometres/hr, ignore GPS which cannot calculate down to that precision. Then again, neither can your odometer.

If authorities were indeed concerned about reducing road fatalities & carnage/infrastructure damage etc. then why permit the production of vehicles capable of high speed ?
Make cars that simply can't go over the maximum speed limit. Also, do away with so many different limits that only confuse & irate drivers. 50-55km/h in town & 110 km/h on the open road. We can never totally avoid fatalities but the can be reduced in number. After all, there are such things as accidents & stupidity. Speed freaks can assemble at raceways !
Spend the available funding on nurturing a healthier mentality instead of Arts & all the other silly things tax Dollars are wasted on. i don't care what anyone thinks but to my thinking mentality is the key to just about everything to do with a decent society !
get rid of that evil that is DEI.

Peter Walsh, minister in the Hawke government and said to be the last true socialist to be in parliament, once opined that governments really don't want to slow traffic down as they claimed.

If they really did, he said, they'd stop repairing potholes.

When the black box comes into being maybe then we can get people to obey the designated speed limit. GPS is not a lawful gauge for speed turns of the wheel is the best gauge. It is your responsibility to get your speedo checked, instead of making excuses.
Who is in charge of setting the road speed? the road signs tell you what you are looking for.
Speeding drivers are driving fines and speed cameras. A subject that should be thousands more of. Every body all of a sudden knows where their speedo is when approaching a known camera, an act that lasts as long as it takes to be out of range only. Speeding is a deliberate act.
Trucks on the Calder are doing 2 trips / day from Geelong to Mildura carting grain. A job that was done by train one train 4000 tonn of grain. Trucks 60 tonn / trip. Not responsible.