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In the new paper, Walker said he and his co-author step back from micro debates about 1.5 meters versus 1 meter and start asking bigger questions about what would actually make cycling safe. This, he said, was not having collisions in the first place rather than having collisions and trying to reduce their severity very slightly. He added: Dorothy has done some very interesting research on compulsory helmet laws in Australia

Having a shield that can change instantly, literally in the blink of an eye, is welcomed

Riders need a hole in the head (literally) about as much as they need, well, a hole in the head (figuratively), and DOTs penetration tests provide some peace of mind in that department

The brightness is a relative measurement from a lux meter

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