The drivers of the trucks more often than not run the stop signs and cut off oncoming vehicles then once in front they drive 45 mph in a 65 mph. I have noticed as well that the rock screens which cover the trailers are not always utilized and even by keeping a proper 500 foot plus distance have managed to have two of my windshields cracked due to rocks flying from these trucks. Yesterday 2019 Dec 10th in less than two hours there were three trucks that ran three stop signs causing me to slam on my brakes and one truck without a properly covered rock screen which caused my second broken windshield not to mention that truck was one of those that had ran the stop sign as well. This is not the first time this has happened I've been contending with this issue for the past two years...