If we do decide to leave the EU in June could it mean ?
The altering of tacho regs to UK regs. If this happens I could see us working a max of 23.5 hrs drive time per day with a minimum of 15 mins rest per 24hr period. 
Cranking up our speed limiters to a UK legal 60mph.
Ditching CBT. Probably not. Its too much of nice earner for HMG. 
Secretelephant:
If we do decide to leave the EU in June could it mean ?The altering of tacho regs to UK regs. If this happens I could see us working a max of 23.5 hrs drive time per day with a minimum of 15 mins rest per 24hr period.
Cranking up our speed limiters to a UK legal 60mph.
Ditching CBT. Probably not. Its too much of nice earner for HMG.
yawn 
there’s a driver shortage, 
everyone’s under 5’ 16" quick get the bridge height map book out. 
Secretelephant:
If we do decide to leave the EU in June could it mean ?The altering of tacho regs to UK regs. If this happens I could see us working a max of 23.5 hrs drive time per day with a minimum of 15 mins rest per 24hr period.
UK domestic regs were far better than the EU ones. Under UK regs you could only do 11hrs work a day but under EU regs you can now legally do a 21hr shift with only 9hrs off under double manning rules.
The only problem with UK domestic regs was how they were monitored. Logbooks are childishly simple to abuse.
Why would you expect to drive excessive hours each day when the UK domestic regulations for goods vehicles has a limit of 10 hours driving time in 24 hours and 11 hours duty time in 24 hours.
If anything the hours would be cut not extended, though I suspect a set of drivers regulations would be written to be more in-line with the EU.
The vast majority of all our rules and regulations, whatever the subject, would remain the same - they’re part of UK law, regardless of where they came from originally.
What do they do in Norway? Almost certainly, we’ll end up as a “fax democracy” and have to implement EU directives as UK law, and we’ll be stuck with the EU rules.
Or, we’d implement AETR regulations, which are surprisingly similar to the EU ones…