Speed bumps are a type of traffic calming, but traffic calming can include a variety of other techniques that can have other benefits. For example, extending sidewalks in residential areas or adding protective bollards to bike lanes - both encourage drivers to slow down by reducing the size of the lane.

You’re being by downvoted but I’m not sure why (though I can guess). Anyway, you might be happy to know that speed bumps are what is referred to as a traffic calming device; it might seem like an odd new term but it is a normal term in traffic engineering.

Mode filters are a great way to fix this problem. No one will use a private street as a through road if they can't get anywhere outside the neighborhood. Bonus points if you make it so emergency vehicles can get through them.