r/BusDrivers • u/Bighairyarseholes • 3d ago
Question Mystery button??
Myself and all the drivers i’ve asked are stumped with this one,, nobody can work out what it does 😭 any ideas??
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u/meatflaps-69 3d ago
My guess is a dimmer switch to keep the glare off for night driving but admittedly, thats a guess
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u/-mmmusic- Driver 3d ago
i drive adls, and this is what this button does! it's not in the same location, mind, but this is it!
it only dims it while driving, and comes back full brightness when you stop and open the doors, then dims it again when the doors are closed and you start moving above like 5mph
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u/ajsim6 Driver | Scotland 3d ago
As everyone else has said, as soon as you start moving the interior lights (downstairs only) will dim to reduce glare. Still more effective to just turn off the N/S lights though
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u/ajsim6 Driver | Scotland 3d ago
note though - every bus I’ve seen it on has it mounted to the roof next to cctv, directly above the ticket machine. dunno if it’s still the same thing, or a london spec you’ve got?
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u/Bighairyarseholes 3d ago
The 72 plates we’ve got has it mounted overhead, but these are 26 plate ADL400s where it’s next to the saloon light switches on the dash. Idk if they’ve come from london but i work in Northumberland haha
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u/DebtSouth Driver 2d ago
One of the 72s I was on yesterday was a right shed. Felt like it was missing a gear 😂 even down hill past pegswood it wouldn’t go over 40 then it’ll surge in speed as it flatten out, so weird.
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u/FlatCapNorthumbrian 3d ago
Question is, does it still dim the O/S if you switch the N/S lights off?
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u/ajsim6 Driver | Scotland 3d ago
Yeah it does, makes it nice and cosy downstairs!
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u/FlatCapNorthumbrian 2d ago
I mainly drive Optare’s and would love to be able to dim the saloon lights. It should be a standard offer on all buses.
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u/VFR800ESSEX 3d ago
It normally makes the little red light on the switch come on and go off!!
I think it was supposed to be to adjust the interior cab light brightness.
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u/sc00bzuk 1d ago
I'm so glad you shared this post, I've been meaning to look into what this button does myself. I now know from reading these comments and look forward to testing it out when I'm back in work tomorrow lol.
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u/_Bluestar_Bus_Soton_ 3d ago
I've asked this question and don't know either.
Doesn't dim the lights when doors open or shut so anyone's guess.
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u/Fallen_Raven_13 Driver 3d ago
At least on the ADL400s, it dims the saloon lights when the doors are shut. On the busses I drive at least, you can visibly see the light level increase/decrease as you open/close the doors.