Rennradguru Safety & Technique

Lighting & Radar

Practical tests, comparisons and guides covering cycling lights, radar rear lights and safety technology for road and gravel bikes.

10 Articles Radar & Bike Lights Practical tests & Comparisons

Cycling lights and radar reviewed

From compact front lights to connected radar rear lights: find all our practical tests, comparisons and guides for greater visibility and safety on your road bike here.

1 Cycling radar
19. September 2026 approx. 5 min.

Bryton Gardia R300D review: the insider tip among cycling radars?

Does good cycling radar really need to cost as much as Garmin Varia? The Bryton Gardia R300D enters as a cheaper alternative with an integrated …

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Garmin Varia RCT 716 tested on the road 2 Cycling radar
4. June 2026 approx. 7 min.

Garmin Varia RCT716 reviewed: how convincing is this radar rear light with a camera?

The Garmin Varia RCT716 aims to make cycling safer with warnings of approaching vehicles and an integrated dashcam. Rennradguru tested the device and shows how …

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iGPSPORT SR Mini cycling radar test with a road cyclist, overtaking car and radar display on a Garmin bike computer 3 Cycling radar
7. May 2026 approx. 14 min.

iGPSPORT SR Mini reviewed: compact cycling radar at a fair price? 

Cycling radar costing less than Garmin Varia, compact and light with an integrated rear light: the iGPSPORT SR Mini sounds very interesting on paper. But …

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Lupine SL Grano practically tested at twilight on a Canyon Aeroad, mounted below a Garmin front mount on the road bike handlebar 4 Lighting
29. March 2026 approx. 6 min.

Exceptional Lighting Power: Lupine SL Grano Review

With the SL Grano, Lupine introduces a bike light clearly designed for performance riding. An integrated battery, slim design and GoPro-interface mount make it particularly …

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Garmin Rearview 820 Cycling Test: a Cyclist on a Road, with Overlaid Garmin Radar Rear Light Camera and Bike Computer Display. 5 Cycling radar
15. March 2026 approx. 16 min.

Garmin RearVue 820 Review: New Cycling Radar Rear Light Tested

The Garmin RearVue 820 is Garmin's new cycling radar rear light for 2026, aimed at anyone wanting earlier awareness of approaching traffic. StVZO approval, radar …

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Sigma Aura 100 review 6 Lighting
20. December 2025 approx. 6 min.

Sigma Aura 100 tested on the Canyon Aeroad: solid beam, simple controls and aero cockpit limitations

The Sigma Aura 100 is a rechargeable front light positioned between commuting and training: considerably brighter than many city lights, without an app or complex …

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SIGMA RECO 80 radar rear light review 7 Cycling radar
14. December 2025 approx. 13 min.

SIGMA RECO 80 review: the new king of cycling radars?

As more cyclists take to the roads, traffic safety becomes increasingly important, particularly for road cyclists on country roads where vehicles often approach quickly from …

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Comparison of different road bike rear lights 8 Cycling radar
16. November 2025 approx. 10 min.

Road cycling rear lights with radar: the best models tested in 2026

Which road bike rear light really suits you? In our comprehensive rear light review, we take a close look at different models, from slim entry-level …

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Garmin Varia Radar review and my experience 9 Cycling radar
30. May 2025 approx. 16 min.

Garmin Varia Radar Review: Overtaken by the Competition?

As cycling grows in popularity, whether for everyday travel, touring or a sporting challenge, safety is becoming increasingly important. Road cyclists in particular often face …

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WAHOO TRACKR – Radar for Greater Safety in Traffic 10 Cycling radar
23. May 2025 approx. 12 min.

Wahoo Trackr Radar: a breakthrough against the competition!

As cycling becomes increasingly popular, whether for everyday journeys, travel or competitive sport, safety is receiving ever more attention. Road cyclists in particular are often …

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Which radar rear light is right for you?

Our comprehensive road cycling rear light comparison features different models with radar, smart warning features and high visibility for training, commuting and long rides.

Explore the rear light comparison