People should sign because a lot of children live in Biscayne Park and have no sidewalk to skateboard on and walk to the park on. Pet owners also need sidewalks so that their dogs have a lower chance of getting hit by a vehicle. Pedestrians also need sidewalks because they can't walk on people's property and if they walk on the street and a car is speeding and can't break fast enough both the pedestrian and the driver could get hurt.