Width is one of the primary geometric features of a cycle track. It encompasses two elements: the width of the cycle track travel lane or lanes, and the width of the buffer zone between the cycle track and the motor vehicle travel or parking lanes. The typical minimum widths recommended are 1.5 to 2 meters per lane of cycle track plus a buffer of at least 0.5 meter.
However, many jurisdictions require or recommend larger cycle tracks either under general circumstances or in specific conditions. Delineation of cycle tracks is also a significant concern. Common options for protected cycle
tracks include painted buffers, flexible bollards, planters, concrete curbs or medians. When a raised cycle track is adjacent to the roadway, recommended vertical separation between the cycle track and the roadway ranges from 1 to 6 inches, while vertical separation between the cycle track and pedestrian facilities range from 0 to 5 inches. While a low-height curb may be used to separate the cycle track from the road, many sources recommend a mountable curb to allow cyclists to use the roadway for passing.
Over the years, experience has made it clear that neither approach is a full solution and that a mix will be needed. On the one hand, the network/segregation approach is clearly not feasible on all streets and cycle routes, since it is constrained by available space and budgets. On the other hand, mixing is clearly not justified at high traffic intensities or speeds.