I believe I have new neighbors in the trailer next door. The voices are different, the SUV is different, and there is now a bright, shiny, fairly new looking, and very LOUD motor cycle next door. I am not as sound sensitive as many others on the spectrum are, but I am somewhat sensitive. LOUD motor cycles definitely bother me. The MC is being kept parked on their patio, which is only a few yards from one of my living room windows. I sleep in the living room recliner due to sleep apnea. It is worse for me if I sleep in my bed. I also suffer from what I call "short sleep." I usually sleep 4-6 hours at a time. I also have IBS, and other health problems. Between all my health problems and not enough sleep, I have a very irregular sleep/wake schedule, and also must try to take naps. With the LOUD MC now living next door, that's going to make me lose even more sleep. AAAAHHHH!! !!
The lawn mowers are definitely not as bad, and when I have the radio tuned to static, the mower sounds tend to blend somewhat with the static. The radio static doesn't work with the MC noise. The MC noise only blends with my stress to make more stress. And now with the warmer weather, the windows are open much of the time. However, even with the windows closed, that MC is too LOUD! There is nothing I can do about it, either. They have a right to use the MC during what are reasonable hours for most people, and so far they have kept to those hours. So I am stuck with a permanent case of LOUD next door, any time the owner gets the urge to go VROOOM! with his MC.
That trailer has had quite a turn over in residents since I moved here several years ago. Please, please let the trend of short occupancy there continue, at least through these people. 
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If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau