The protected-permissive bike signal, also known as the Split LBI, allows through-moving motor vehicles to start at the same time as parallel bikes. Bike and pedestrian movements continue, as turning motor vehicles receive a flashing yellow arrow turn phase. Protected-permissive signal phasing can reduce the number of conflicts per turning motor vehicle, even compared with full signal protection. Protected-permissive bicycle signal operations allow riders to decide for themselves whether it is safe to go during the motor vehicle phase, or whether to wait for a fresh protected bike phase. Protected-permissive bicycle signals are most applicable on streets where turn volumes are moderate to high and vehicle storage is needed, but prevailing motor vehicle speeds are relatively low, preferably 25 mph or below. This use of a bike-symbol signal is considered experimental under MUTCD Interim Approval IA-16.