People are going to speed in their vehicles regardless of what authorities try to do about it. I see it every morning and afternoon on my way to work. These are usually the times when Police have knocked off for the day.
Given this plainly evident situation, here are my new rules for National Divided roads (like the M1 from Brisbane to Cairns).

1. Left lane is speed restricted to 110 Kph
2. Right lane is unrestricted (drive as fast as you like or your vehicle will allow)
3. Any vehicle over 1.5 tonnes is restricted to 110 Kph and must use the left lane unless overtaking.
4. Any vehicle in the act of towing anything is restricted to 110 Kph and must use the left lane unless overtaking.
5. All on and off ramps are to be signed with High visibility signage informing motorists that death is likely and does occur often.
6. No insurance cover is provided if you exceed 110 Kph in any lane
7. If the driver of a motor vehicle causes an accident through negligence they lose their vehicle (never returned) and license for 12 months.
8. All current speeding road fines are tripled for the National routes.
9. No motorist using the National route can by any means sue or bring legal proceedings against any other motorist using the National route.
10. Any roadworks being carried out on a National route, must be carried out while ensuring traffic can continue at minimum of 110Kph in at least one lane, at any time of the day or night.
11. Only an accident is sufficient reason to restrict the speed limit to less than 110 Kph, and only while the accident has not been cleared.
12. Any vehicle carrying children under 16 is restricted to 110 Kph and must use the left lane unless overtaking.

I’m sure you can think of others (I’d like to hear them), and there will probably be caveats to these.

I’m also sure this will outrage some people... probably those who like to restrict and confine, but we’re all allowed our own opinions and these are mine.