As said they are illegal to use, same as tinted screens forward of the a-pillar. It's also not just night time, but if dark clouds roll in, or whatever.
It's why a lot of helmets now comme with a secondary flo down sun visor.
Carry the clear one with you, don't act like a Twonk and don't have an illegal bike like loud exhaust and it's unlikely you'll get issues from a cop. But relies its still technically wrong.
I second this.
Traditionally tinted visors (or anything else which isn't clear and permanent) weren't legal for road use (in the flipped down position). Wearing sunglasses under your helmet is legal and I have always used helmets with an internal secondary tinted visor.
The fact people may have worn tinted/iridium visors for years and never been stopped or done is irrelevant and has no reflection on what the law actually says.
I believe recently the law has changed and permits the use of 25-50% tinted visors (bearing an approved manufacturers mark) during daylight hours only.
From another bikers forum;
This is the official police stance.................
"Any visor with a light transmission rate of less than 50% is deemed to be not UK road legal. A typical dark tint and iridium visor has between 40% to 20% light transmission rates. A standard road legal tinted visor has a 50% transmission rate.
In the latest police guideline report this is the following recommendation to all England, Wales and Northern Ireland forces
“Tinted visors, if used during daylight hours, advice only, if used during the hours of darkness or conditions of reduced visibility consider prosecution using ‘Tintman’ equipment where available.
It is acknowledged that there is much debate about this issue and many variables and anomalies can be applied. Therefore a pragmatic approach is necessary and only in cases where there is an obvious danger should prosecution be considered”
So in my opinion on the road the best option is a helmet with flip down tinted visor as you don't need to carry a spare clear one, you can flip it without having to stop and you won't any hassle off the boys in blue. While on the track go for an iridium one which also makes your bike faster
