I'm not saying you are wrong, but the courts are open every day anyway, and it's just a misdemeanor case over 3 traffic tickets. This case is not going to cost much additional money that the county wasn't already spending to run it's daily business. They aren't going to spend a lot of money on experts. Two lawyers (one prosecutor and one appointed by the court) are going to be doing what they would be paid to do that day in court anyway - arguing some case or other. Impaneling a jury for the day might cost a few dollars - mainly in terms of paying them their very small per diem.
The good thing is that it's bringing a lot of local media attention to the condition of the road and the shoulder. Plus, the judge has already ruled in her favor once. So the cyclist, Cherokee Schill, is already doing her part to bring the kind of improvement of conditions you are referring to.