This questions brought about by a couple of weeks cycling the new Sheffield inner relief road. A marvellous piece of engineering which appears to be faster by bike than car. But…. anyone out there able to answer this? The blacktop tarmac seems to be laid continuously. I guess we’ve all seen this being fed out of the back of the machines when a roads being resurfaced. On this new road system the cycle lanes are red. This surface appears to be laid in 1-2 meter sections, which overlap. Therefore you’ve got cars with their fat tyres and computer modelled suspension on smooth roads and cycles on effectively a rumble strip. Keeps me off them. Why can’t this be smooth?