Is it illegal to ride your bike on the sidewalk as long as you're going at a little over the walking speed?

--- in California --- i come on people, isn't it okay to ride a bike on the sidewalk as long as you're making audible signals and going a little over the walking speed, maybe like 4 - 5 mph and stuff? please give me a pretty answer ~ i beg you~ x] oh and im 15, if that helps with the age thing that kids could ride on the sidewalks instead of roadways for safety at least, besides the streets i need to ride on are like wide and we have stop lights and everything soo.... yeah

Yes, it is illegal to ride your bike on the sidewalk. It doesn't matter how slow you are going. You put pedestrians in danger by riding your bike on the sidewalk. You are still young and maybe one day you will understand this.

Laws are different in different places, but I can assure you, if they don't allow riding a bike on the sidewalk, it doesn't matter to the law how fast your are riding.

You make a good argument with the safety concern, but again, the law doesn't care.

a bicycle is considered a vehicle under the CA vehicle code.
no vehicle is supposed to be driven or ridden on a public walkway.

In California it is illegal to ride your bike on any sidewalk......

Bike tickets cost between $15-$250 dollars.

Generally it is. You also need a helmet. Bikes must follow the same laws as cars.