GSD and HSD Exceed Cargo Bike Safety Standards

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If you’re anything like us, you can surely appreciate a well made bicycle for urban commuting. As you already know, we’re huge fans of Tern folding bikes for daily commuting. That’s why we’re excited about the current news of the GSD and HSD electric bikes being among the first to pass, and even exceed, rigorous new German cargo bike testing standards.

On July 21, 2020 in Taipei, Taiwan, Tern and EFBE Prüftechnik teamed up for Cargo Bike Testing

Even though cargo bikes are very popular in Europe and beyond, they were never included in previous international safety standards, such as the ISO 4210 standard for city, trekking, young adult, mountain and racing bicycles, or the EN 15194 standard for e-bikes. But things are changing.

New Cargo Bike Standard

Earlier this new a new German standard (DIN 79010:2020-02 Cycles – Transportation bikes and cargo bikes) took effect.

The result was becoming the first to specify the testing methods and safety requirements for electric and non-electric cargo bikes. The GSD and HSD have both passed this standard to their stated weight ratings.

There’s a high probability that this comprehensive standard for cargo bikes developed in Germany could serve as the basis for a future European EN standard, which is currently being discussed by a technical committee of the European Committee for Standardization.

“We see a lot of cargo bikes out there that clearly wouldn’t pass more extensive testing, and that is quite worrying,” stated Marcus Schröder, Director of EFBE Prüftechnik and one of the principal authors behind the new German cargo bike standard.”

“Having well-defined testing standards is not only important to ensure riders have the peace of mind they need when carrying their kids on the bike, but also to push manufacturers to follow what should be basic safety requirements. We’re glad to see companies like Tern using lab-testing to identify weaknesses in their designs.”

EFBE Tri-Test: Testing Beyond Standards

The EFBE Tri-Test for cargo bikes builds upon the German standard. But adds proprietary maximum and overload test stages to the test sequence defined in DIN 79010.

This is required in order to verify that the product endures singular peak loads at the edge of design use.

It also ensures the bike remains safe even when pushed beyond its limits. And does not risk the safety of riders or passengers when overloaded.

The Tri-Test includes 10 different frame stress tests by requiring that one single frame pass all 10 tests. Any damage caused by one test will carry over to the remaining tests.

And each test is performed with massively higher loads—proportionately higher based on the claimed weight capacity and geometry of the bike.

Some of the tests on the Tern GSD frame and fork featured loads over 300%.

This is much higher than specified in the European EN 14764 standard for city/trekking bikes.

Both, the GSD and the HSD have passed the EFBE Tri-Test up to the claimed load limits of 200 kg and 170 kg

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This means they meet and exceed the German cargo bike standard.

“Bicycle design is changing quickly and when you add passengers and cargo and electric motors, the forces at play escalate quickly,” stated Tern Team Captain Josh Hon.”

“It’s really important that safety and testing standards evolve to cover these new types of bicycles. In quite a few cases, there hasn’t been a relevant testing standard for a component we’ve wanted to test and we’re really happy to have EFBE as a partner to help us design the testing standards to ensure safety for our customers.”

To learn more about how Tern tests their bikes, visit:
https://www.ternbicycles.com/qa-how-we-test-our-bikes

To learn more about the EFBE Tri-Test, visit:
http://efbe.de

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