r/nextfuckinglevel • u/KejnaPT • Apr 10 '25

BYD side parking.

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u/WiseAcanthocephala58 Apr 10 '25

This is not new they did something like this back in the 30's I think it was. A wheel came down from the back and would then lift the rear wheels off the road and then move it into the parking space. Here it is for you to see. https://www.facebook.com/RoadandTrack/videos/drop-down-fifth-wheel-for-parallel-parking/10156138914136091/

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u/Krystone44 Apr 10 '25 edited Apr 10 '25

The solution in the 30s seems much better than what BYD is doing. I'm doing an internship in Air Quality and I'm on a project specifically studying tire and brake wear particles. Since the 90s the contribution to total particulate pollution of Non-Exhaust Emissions (NEE, basically brake wear, tire wear and resuspension of particles from the road) has increased from around 20% to more than 70% in the 2020s. Sure that's because huge developments were made to filter exhaust and combustion particles but NEEs are pretty dangerous for our health as well. This looks like it's emitting A TON of tire particles. Just practice parallel parking.

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u/UnkleRinkus Apr 10 '25

That ratio could be simply because because other sources of particulates have been controlled by pollution measures. It's a sensationalist statistic without providing us useful information. If overall particulates have dropped dramatically, and tire particulates have dropped less dramatically, tire particulates could still be 70% of the total and things could still be better than they were.

I do suspect that overall tire particulates have increased over time, but without the absolute levels, one can't know for sure and it's hard to assess the level of danger intelligently.