Question If a High Intensity Activated Crosswalk (HAWK) signal is solid black, it means: Answers Drivers may proceed with caution. Drivers should slow down and prepare to stop. Drivers should come to a complete stop. There are no pedestrians nearby. Explanation HAWK signals are used at pedestrian crossings. If the signal changes to a solid black, drivers should proceed past the crosswalk with caution. Take a FREE Practice Test Now This questions appears in the following tests: Colorado Practice Test