While many assume separation between bikes and cars is best practice in all conditions, the CROW manual takes a more nuanced approach: “Mix where possible, separate where necessary.”
Where feasible, the speed and volume of cars should be reduced—to a maximum of 30 km/h (20 mph) and 2,500 cars per day. Only as a last resort, where traffic calming isn’t possible—where cars exceed 50 km/h (40 mph)—then physical separation isn’t just recommended, it is required.
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