Meet the Other Phone. Only the apps you allow.

Meet the Other Phone.
Only the apps you allow.

Buy now

Please or to access all these features

Chat

Join the discussion and chat with other Mumsnetters about everyday life, relationships and parenting.

Is it okay to drive well below the speed limit on a main road?

695 replies

ScarboroughFairy · 01/02/2026 23:38

Hi all, tomorrow I’ll be driving on a main road where the speed limit is 60mph, but I’m thinking of sticking to 40mph. I know it’s well under the limit, but I just feel safer at that speed. Does anyone else do this

OP posts:
Thread gallery
6
Only4nomore · 02/02/2026 07:57

My daughter failed her first driving test because she was doing 20 in what was a 30. So yes I would say its not ok.

TheGoddessAthena · 02/02/2026 07:58

Jeez Louise. If you are driving from Edinburgh to Inverness (or vice versa) the A90 is only the bit from Edinburgh to the Forth Road Bridge, then it's M90 (dual carriageway) and A9.

Driving on the A9 at 40 because it "feels safer" is madness. The danger on this road is that there are sections which are dual carriageway and sections which are one lane each way. In the summer, huge numbers of foreign tourists who forget to drive on the left. And bad weather.

Seriously, you can't just have a blanket policy of driving at 40. This just says you are not a good, safe or competent driver.

NotTerfNorCis · 02/02/2026 07:58

Willowywisp · 02/02/2026 07:56

Being too scared to drive above 40 is hardly the same as having to drive slower because you've had to change to your space saving tire after a puncture. Your post adds nothing of use to the thread whatsoever.

That's an unnecessarily aggressive post.

She was making the point that yes you can get away with driving slow, but it should be the exception, not the rule.

Interested in this thread?

Then you might like threads about this subject:

Willowywisp · 02/02/2026 07:59

Lostworlds · 02/02/2026 07:10

I’ve driven the road before, there are quite a few crashes but crashes are not always down to going 60mph.

As other pp have said, driving too slow can also be as bad as driving too fast. My concern would be angry drivers behind you then trying to pass quickly.

Driving new roads can be nerve wracking, I don’t always enjoy driving new roads but it’s such a great achievement when you do it, you’ll feel proud of yourself and be able to challenge yourself to go new places.

Or her nerves will be shot and she'll be too exhausted to make the return trip.

watermybegonias · 02/02/2026 08:01

You would be an absolute menace and threat to other drivers, and just as likely to cause an accident, even inadvertently, as someone speeding.

Book some driving lessons to boost your confidence.

ChuffingNoraah · 02/02/2026 08:03

OP, this will probably get lost in other posts, and maybe it’s been mentioned already, but there are heaps of Flixbus options available today for around £15 one way, so probably cheaper than fuel! And as an OP mentioned, there will be train options too. I certainly wouldn’t drive the A9 if not confident. Good luck!

giallo · 02/02/2026 08:04

Astra53 · 02/02/2026 00:22

They may have been caused by that person crawling along well under the speed limit....if you can't drive with the prevailing conditions presented at the time of your journey then you should not be driving.

Agreed.

TheNightingalesStarling · 02/02/2026 08:07

I agree the OP doesn't sound safe...

But don't you have tractors on Scottish roads? That's the biggest hold up here (in Yorkshire) on the A roads. They need to get their tractors from A to B.

Also once had to follow a Wide Load down the A1 from Doncaster to Peterborough, at 40mph, over both lanes...

Bloozie · 02/02/2026 08:07

Ah, bless you. Being able to drive should feel liberating, not a cause for such severe anxiety.

You can have some Pass Plus lessons to build your confidence on fast roads, and there are some tips on managing driving anxiety here: https://www.rac.co.uk/drive/advice/driving-advice/scared-of-driving/

Ultimately, if your objective is to avoid having an accident, your anxiety needs tackling as it puts you at risk whether you're travelling at 40mph or 60mph.

Scared of driving - how to overcome driving fear

Unfortunately for many would-be motorists – the thought of driving can be overwhelming. The RAC is here to help you conquer your fear.

https://www.rac.co.uk/drive/advice/driving-advice/scared-of-driving/

Willowywisp · 02/02/2026 08:08

Dymaxion · 02/02/2026 07:46

Judging by the amount of road improvements scheduled for that bit of road, its doubtful anyone will be doing above 40 !

The improvements are to widen the road from single carriageway to dual carriageway to make it safer and help the flow of traffic. People will most definitely be travelling at 60mph and will not expect to be impeded by a car doing 40.

Willowywisp · 02/02/2026 08:10

NotTerfNorCis · 02/02/2026 07:58

That's an unnecessarily aggressive post.

She was making the point that yes you can get away with driving slow, but it should be the exception, not the rule.

Aggressive? What was aggressive exactly?

Shakirasma · 02/02/2026 08:11

If you aren't confident to drive appropriately for the road in safe conditions, you shouldnt be driving at all.

Didshejustsaythatoutloud · 02/02/2026 08:12

Just remember people, speed limit is a limit not a target.
Happy to help

nOlives · 02/02/2026 08:14

Isn't a lot of that road 50 for larger vehicles, or am I confusing it with the A9?
If you stay on the left of the dual carriageway bits and can manage 50 on the single carriageway bits, I am sure you would be fine.
Really though, it sounds like you need to get used to driving more, to build your confidence. I wonder if displaying P plates would help other drivers work around your nervous driving.

PruthePrune · 02/02/2026 08:15

You sound far to anxious to be driving any distance. Get more lessons.

ByQuaintAzureWasp · 02/02/2026 08:17

You should not be driving if you are not able to drive at around the speed limit

Willowywisp · 02/02/2026 08:17

TheNightingalesStarling · 02/02/2026 08:07

I agree the OP doesn't sound safe...

But don't you have tractors on Scottish roads? That's the biggest hold up here (in Yorkshire) on the A roads. They need to get their tractors from A to B.

Also once had to follow a Wide Load down the A1 from Doncaster to Peterborough, at 40mph, over both lanes...

Of course we have tractors. What's your point? The tractor drivers have the sense to let the build up of traffic pass when they can and they also aren't doing long stretches on 1 road like the OP is planning. Tractors are highly unlikely to be travelling 160 miles from Inverness to Edinburgh. They come on at 1 junction and off at the next generally and yes, it's annoying and the traffic backs up massively. Now imagine someone choosing to do 40mph for 160 miles. The police would be called to get them off the road so Scotland could get moving again! Tractors are less often on main trunk roads though and much more on roads local to their farms.

Ocelotfeet27 · 02/02/2026 08:18

You won't get better and more comfortable at driving OP unless you get more experience. Just do what speed feels safe on any given stretch of road. Some bits of the main roads near me (small-ish country lanes) I would do 55, some i would do 40, some I would do 25. Assess what people around you are doing and use that as a barometer to help you work out are you going dangerously slow or dangerously fast, or ok. You will probably have a car in front of you you can follow by setting a safe distance between the two of you and matching their speed (unless they are a lunatic!).

My friend was similar to you driving (very anxious) and one day decided not to do a difficult trip and then lost her confidence altogether and now doesn't drive. Another friend was also nervous but then needed to drive for work and doing it every day built her confidence and now she's fine. Don't let your anxiety beat you. But maybe do this kind of tricky road on a day when you aren't in a rush and can just come and go on your timeline (ie not meeting someone). Definitely worth investing in Pass Plus lessons if you have the time/money, it really boosts driving confidence for most people.

StephensLass1977 · 02/02/2026 08:18

My uncle used to do exactly this and it drove his passengers mad. And he caused a few accidents because of it.

Mochudubh · 02/02/2026 08:19

If you are driving from Inverness to Edinburgh, do you mean the A9 rather than the A90?

I think the A9 has average speed cameras most of the way so there shouldn't be too many drivers speeding.

In my opinion the main problem with the A9 is that there are still many short stretches of dual carriageway interspersed with stretches of single carriageway. This leads to a rush of cars trying to overtake slower vehicles on a short stretch of dual carriageway, some of them "chancing it" as the dualled bit comes to an end.

There are also still too many right-turn junctions without over/underpasses so drivers leaving or joining the A9 have to cross 2 lanes of traffic. This is often where crashes occur. And that's before you sdd tourists into the mix who forget to drive on the left.

Honestly OP, I don't mean this nastily but you really don't sound either competent or confident enough to drive over 100 miles on the A9. Take the train or the bus and get some advanced driving lessons.

thirdfiddle · 02/02/2026 08:20

Willowywisp · 02/02/2026 02:15

You've never driven the A9, have you? Or in Scotland?

Did you read my whole post or just the first sentence? If you read on to the second sentence you'll find I was reassuring OP that she'll be fine driving at the speed of ambient traffic.

sewingstockings · 02/02/2026 08:20

ScarboroughFairy · 02/02/2026 00:25

i will be driving down toedinburgh from in inverness

Edited

It’s an easy run. You will probably get stuck behind a truck on the single lane.
when it hits the dual carriageway then you just overtake.
Most of the crashes happen on the single lane when sombody overtakes when they really shouldn’t. All I can say is be aware and get treatment for your anxiety or extra driving lessons to increase your confidence.

TheGoddessAthena · 02/02/2026 08:21

This thread is WILD. So many comments from people who have never driven on the A9 but still feel they have the duty to share the benefit of their wisdom.

"Just take another route to avoid dual carriageways" - what would that be? Down the side of Loch Ness and through Glencoe? Over the Kincardine Bridge and through the back roads of West Lothian? Sure, if you have 8 hours or more to spend.

I really hope the OP is on her way to Inverness bus station to get a Citylink ticket.

auserna · 02/02/2026 08:22

ScarboroughFairy · 02/02/2026 00:25

i will be driving down toedinburgh from in inverness

Edited

In that case take the train or the bus.

Would you not fail a driving test for going so much under the speed limit?

ChapmanFarm · 02/02/2026 08:22

The A9 isn't dualled for its full length and that's half the problem.

The trouble with driving so slowly is you can't react.

The road serves like a motorway but because it's not a motorway you get tractors pulling out of standing starts or very short slip roads, people turning off at the last minute, other traffic crossing two lanes etc.

It's a road where you'd struggle to drive at a consistent 60 because of all this.

But to deliberately decide to do 40 all the way you'll find yourself boxed in on the sections that are dualled.

Cars trying to join will expect you to move over and may pull out on that basis. If your speed is significantly slower you'll struggle to do so.

If you do drive scan ahead and prepare for junctions. Like a motorway keep a close eye on your mirrors so you know what's happening around you.

But the train is a good option.