I wanted to see if there are arguements that can be used against a speeding ticket. I was on the freeway and was clocked going 80. I dont think I was going that fast. There was a number of other cars around me and it was morning rush hour.
Your issue at the moment is that you actually don't have enough information to fight properly. There are several different ways that speed can be measured, some more effective than others. Radar fires in a cone and doesn't necessarily pick up one unique vehicle. Lidar fires a continuous beam at the back or front bumper and is usually more reliable. If you truly want to fight this, find someone who can actually do it properly and make the right FOIA requests to make your case, because right now you simply don't have enough information to mount an adequate defense.
The speed limit between Marysville to Olympia on I-5 is 60 mph. Unless you were going 60 or less, you were speeding. "I dont think I was going that fast" probably means you were going faster than the posted speed limit.
That other drivers were also speeding would not be a defense to you being ticketed for speeding.
You likely are not going to have the ticket dismissed arguing how fast you were traveling unless you have a video showing your vehicle's speed moments before you were ticketed.
Most traffic tickets attorneys win most of their cases based on finding some procedure defects made by the police officer, prosecutor, or court. All those persons must do things in certain ways as required by the law in order for you to be found to have committed some traffic infraction.
Your best chance of getting out of the traffic ticket likely is to hire a traffic ticket attorney. Given that many attorneys charge between $200 to $400 for simple traffic tickets, hiring an attorney likely is the way to go especially since you likely do not have to go to court with the attorney.
Yes, there are plausible arguments against speeding tickets. Hire a local ticket attorney.
There are many effective arguments against speeding tickets based on radar or lidar. If the radar is properly calibrated and operated it will give accurate results in heavy traffic, so the facts you list by themselves are not sufficient to win your case. The potential defenses lie in whether the officer has submitted the proper information to establish these foundational requirements and whether this information is admissible as evidence in your case. If you want to have a realistic chance at winning your case I suggest you hire someone who is trained in fighting tickets.