“Occasionally it will be necessary to provide a transition from on-carriageway cycle lanes to off-carriageway cycle tracks and vice versa. This transition should be clear, smooth, safe and comfortable for cyclists. Minimum speed change and vertical and/or horizontal deviation for cyclists should be the objective.”

Not my words, but I couldn’t have said it better myself. This is from the draft of the revised London Cycling Design Standards by Transport for London (TfL) that was under consultation in the summer of 2014. (Par. 3.2.28)

London Not quite designed according to the draft design standards. This cycle track starts and ends on the side-walk right at a pedestrian crossing. (London)

And there is more wisdom in that draft:

“It is particularly important not to have a vertical step change in level along a line running along the general direction of travel. This can happen if cyclists are directed to…

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