Required - All vehicles, trailers, and semi-trailers must be equipped with fenders, covers, flaps, or splash aprons adequate for minimizing the spray or splash of water and mud to the rear if the vehicle.
For passenger cars, motorcycles, mopeds, trailers, and semi-trailers, all such devices shall be as wide as the tires behind which they are mounted, and extend down to at least the center of the axle. (See required equipment for exceptions)
For a converted off-road motorcycle, all such devices shall be as wide as the tires behind which they are mounted and extend down at least ½ way to the center of the axle. (NOTE: an off-road motorcycle cannot be converted until after January 1, 2012).
Body, Fender, and Bumpers - Shall be maintained without protrusions that could be hazardous to pedestrians. Bumpers shall not extend past the original bumper line. RCW 46.37.517
Safety Appliances - Such as clearance lights, flexible fender extensions, mud flaps, splash and spray inhibiting devices, and others may not extend more than 3" beyond the extreme limits of the body. RCW 46.44.010
Rear Vision Mirror - Shall not extend more than three inches from the side of the vehicle. RCW 46.44.010
To the Front - Load shall not extend beyond 3' (Read for exemptions RCW 46.44.034)
To the Rear - Load shall not extend more than 15' beyond the center of the last axle. RCW 46.44.034
Outside Load Limits - No passenger type vehicle shall be operated with any of the load extending past the fender line on the left side, nor more than 6" past the fender line on the right side of the vehicle. RCW 46.44.060
(Visors, stickers, hood scoops, mud, and all other after market items.)
No items except the hood ornament and windshield wipers, identical to those originally installed by a recognized manufacturer, shall project more than 2" above a line from the top of the steering wheel to the top of the front fenders or hood. WAC 204-10-024
No person shall drive any motor vehicle with any sign, poster, or other non-transparent material upon the front windshield, side wings, or side or rear windows of the vehicle that obstructs the driver's clear view of the highway or intersecting highway. RCW 46.37.410,
Covers - No additional lamp, reflective device, or other motor vehicle equipment shall be added which impairs the effectiveness of the lamp standard. See individual lamp RCW/WAC Headlamp.
Concealment Device - Shall be fully opened in not more than 3 seconds after the actuation of a driver operated control. FMVSS 108 S12.5
Front - A maximum of four of the below listed lamps may be on at one time. RCW 46.37.270
Head lamps -
Must meet requirements outlined in FMVSS 108 and be marked “DOT,” or of ECE regulations and be marked with a circled uppercase E or boxed lowercase e.
Each lamp must be equipped with the type of bulb for which it was designed. Note: A halogen headlight cannot be converted to a high intensity discharge (HID) headlight as replacing a halogen bulb with a HID bulb renders the headlamps performance dangerous and noncompliant with applicable regulations
Required to be on from a half hour after sunset, to a half hour before sunrise, and at any other times when persons and vehicles are not clearly discernable at 1000 ft. RCW 46.37.020
If installed after 1975, not closer than 12" from the centerline of the vehicle, but as far apart as practicable. If customized, then no closer than at the time of manufacture. WAC 204-21-040
Located not more than 54", nor less than 24" from the ground to the center of the light. RCW 46.37.040
Sunscreening devices and/or recreational products may not be applied to, or suspended between the driver and the windshield, or to the windows to the immediate right and left of the driver. Recreational products may be applied to other windows only if they do not interfere, by their size and/or position with the driver's ability to see other vehicles, persons, and objects. RCW 46.37.430
Must have both left and right side-view mirrors if window tinting is applied, allowing a 200' view to the rear. RCW 46.37.430
The maximum level of sunscreening material to be applied to any window, except the windshield, shall have a total reflectance of 35% or less, and a light transmittance of 24% or more. RCW 46.37.430
Exemption - Doctor's orders. RCW 46.37.430 A greater degree of sunscreening may be applied to the top 6" of the windshield. RCW 46.37.430