(Portland, OR) -- Changing to Daylight Saving Time will cause it to be dark earlier in the afternoon. The Portland Bureau of Transportation is urging drivers and pedestrians to use more caution. Drivers should check blind spots for pedestrians, replace windshield wipers and be aware of dark areas where it's more difficult to see pedestrians. People walking along streets should wear clothing that makes them seen, carry a flashlight and avoid distractions like using a cell phone.