Question

question 19 listen which traffic signals limit the number of vehicles that can enter a highway to reduce overall traffic congestion? a lane use control signals b ramp - metering signals c non - functioning traffic signals d flashing traffic signals

Explanation:

Ramp - metering signals control the rate at which vehicles enter a highway from on - ramps, thus limiting the number of vehicles entering to reduce congestion. Lane use control signals manage which lanes are open or closed. Non - functioning traffic signals do not help with traffic management. Flashing traffic signals are mainly for warnings.

Answer:

B. ramp - metering signals