My question involves traffic court in the State of: Washington State
ticket: 34 MPH in school zone 20 MPH, location 850 Main Street
discovery: The officer saw me travelling higher than 20mph on main st, passing school zone sign and other vehicles. The officer estimated my speed to be 30~35 and got 34mph on SMD.
1) I didn't see the light flashing. but I did notice other cars reducing speed since i was following traffic. I reduced my speed following the car in front of mine. I thought the officer estimate my speed before passing the 20 mph sign. 35 MPH sign is only 15 yard from 20 mph sign.
2)I am sure that I was driving 20 mph at 850 main street (the location on ticket), which is in the middle of 20 mph sign and the officer's location. My passenger can prove it. Do I need to subpoena him? Should I share information of my witness with court/prosecutor?
3)I drove along main street again and didn't find 850 main street. there was only buildings whose numbers are 846, 848, 854.
Any help anyone can provide, especially wording my defense would be greatly appreciated.