What 'Rear' Light

I really like the Rockbros ones - saddle rail mount is nice and secure (zip tied), high up and out of the mud. Quarter-turn mounting so easy to take off to charge without faffing with rubber bands, although it lasts ages anyway. USB-C charging, and 4 tiny LEDs around the power button to show how much charge it has.

They do fancier ones that do brake-lighting etc but the basic one is great. Only thing I don't like is a couple of pointless modes (like flashing multi-colour) that you have to go through to get to steady red.

The Rock bros ones are practically useless in daytime - they're just not bright enough.

Exposure TraceR is the only real answer.  It can mount under the saddle, has multiple modes and dependent on model, has a reliable brake function (again unlike Rockbros), a Daybrite function (brighter inn the day time) and a Peleton function (reduces brightness when someone is close behind)

I use these coupled with both Knog Mini Chippys and  Mini Cobbers.

Exposure TraceR

exposure traceR is the answer

I've got a Moon Nebula for gravel / road, especially useful in the ultrabright daytime mode, and a Moon Arcturus Pro which is spot on for offroad. Both purchased in a Merlin Cycles half price sale. They both came with a great selection of mounting brackets and have been pretty solid.

I'm a big fan of Moon lights due to their low cost and decent (for the price) construction.

I love my Exposure rear lights. Loads of mounting options, super bright in the sun, and reasonably priced repairs out of warranty (I used this when my TraceR died after a few years).

Been using See.Sense since their original Kickstarter ones. Use an Ace now, on day & night, all weathers. Great, but i think they’re quite pricy now. Got their front Beam+ on an early bird deal too, superb on the front.

Garmin Varia 515. It's been a revolution. A decent rear light that provides a warning of cars behind (speed and distance) and adaptive flashing to get their attention. The mounts are decent too. Bought in Garmin Black Friday deal last year. Backup is Cateye Micro on a saddle mount.

I also have a Fly6 when commuting on folder in town. Garmin Varia is a better device. They make a massive and expensive one with a camera, but it's too big. The 515 is the sweet spot.

On the TT bike I use a Scorpion, that's practically producing photon thrust (it has a green/white mid pulse). On a Dual Carriageway, I want to be seen a mile away. Saddle mounted, it never goes on a normal bike.

Moon Comet X - we have 3 and they *just work* - and one particularly is two years into daily use as deliveroo rider.
I also have a Moon Sirius Pro - it was as cheap as the others in the sale and more powerful. USB-c charger 🙂 and has auto brake light 8)

They come with various mounting hardware that many others do not.

Edit: currently mucho cheapo for what it is: https://www.leisurelakesbikes.com/accessories/lights/moon-sirius-pro-rear-light-blackred__352871

Thread has just reminded me I have a Moon (Nebula?) hidden somewhere in the "bike spares" boxes.

Been using the rear "shield" light on the road bike, that came part of the Lidl set I grabbed a week or so before the pandemic began. Using a ~10 year old Lidl/Aldi set that look like Moon Comets(?) on the hybrid commuter.

When I remember, I usually have a cheap set of those silicon PlanetX lights on the bike as backups, just in case the main light fails, because I've lost track of how much use they've had since last recharge.

There’s a small flood of traceR lights on eBay ending in a couple of days, from tri sports resort (returns outlet of wiggle/crc).

I’m bidding on one so I don’t know why I’m telling you lot. Will need to buy a bracket (but that’s ok cos the seat rail bracket I want is sold separately anyway).

I’ve recently had a positive experience buying a second hand exposure maxx d so happy to recommend these - exposures are built to last and are serviceable.

have two Leyzne rear lights.  Strip pro300 and a Zecto max 250.  The zecto clips onto my saddle bag.

Another happy user of traceR or boost for a bit more run time, but fewer mounts.

i forgot to say if you wear a bag night riding, then the moon ring is good, clips onto a bag, out of harms way, as with the majority of lights, excl. the exposure traceR , muck and water spray from the rear tyre destroys most brands.

The best has to be the Garmin Varia it’s a game changer for road riding. I have a Tracer as a back up 2nd light. I did run an Exposure  Blaze for years. That’s even better than the Tracer however it pinged off never to be seen again.

Another vote for Varia.

Varia is very good. Decent clamp seatpost mounting is available  so it’s just a quarter turn off. Connects to my Karoo, shows graphics of the approaching traffic and has adaptive flash as mentioned, so when it detects a car it changes pattern.

Backup is a MagicShine SeeMee 200 - fab little light. Has a puddle light that illuminates the rear wheel and automatically activates in low light. Lasts hours and hours.

"exposure traceR is the answer"

This for the win.  Absolutely great light - physically small but an excellent output. Mount Brackets available also for aero sest posts, if that's your thaaang.

Another vote for Moon rear light. Just works.

I also like the Moon Nebula. Recently lasted a whole night in one of the flashing modes. I've also got one of the Aldi clones (Bikemate), and it's pretty good too, but not available very often.

honestly thougt the Varia was a dumb gimmick but wouldn't be without it now.

TraceR reakt with a saddle mount. Brilliant.

Another Varia vote!

When I read reviews I thought it sounded daft. When a Tesla made me jump out of my skin I decided to give it a go. Absolutely love the extra layer of awareness it gives.