Here's a good trick for this kind of trap:
DO take it to court. However, be aware that the many people they pulled over that day will all be scheduled to go to court on the same day. This makes it easy for the cops to be there. So...
DO postphone your court date--as many times as they will let you. There is a pretty good chance the cops won't show up when you actually get your day in court, and as such your charges will be dismissed.
I've done this twice with speed traps (cars, not bikes) and both times the cops didn't show.
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1964 JRJ (Bob Jackson), 1973 Wes Mason, 1974 Raleigh Gran Sport, 1986 Schwinn High Sierra, 2000ish Colian (Colin Laing), 2011 Dick Chafe, 2013 Velo Orange Pass Hunter