Violet,sure is early to post but here goes.For safty reasons yes it helps stop in a emergency,plus many states now require you to have one.Just came in off the road and many MHs do not use them.Myself I do and believe me when the first IDIOT jumps in front of you and applys the breaks you will wish you had one.What size MH and check your states requirements.If you do decide to go this route,check every possible hookup.I would not go with mine again as it is a little hard to hook up.