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No driver of a vehicle shall disobey the instructions of any official traffic-control device placed in accordance with the provisions of this Code, unless at the time otherwise directed by a police officer subject to the exceptions granted the driver of an authorized emergency vehicle. ('91 Rev.) [Ref. Iowa Code §321.256]
For the purposes of this section "stop at the official traffic control signal" means stopping at the first opportunity at either the clearly marked stop line or before entering the crosswalk or before entering the intersection.
Official traffic control signals consisting of colored lights or colored lighted arrows shall regulate vehicle and pedestrian traffic in the following manner:
1. A "steady circular red" light means vehicular traffic shall stop. Vehicular traffic shall remain standing until a signal to proceed is shown or vehicular traffic, unless prohibited by a sign, may cautiously enter the intersection to make a right turn from the right lane of traffic or a left turn from a one-way street to a one-way street from the left lane of traffic on a one-way street onto the leftmost lane of traffic on a one-way street. Turns made under this paragraph shall be made in a manner that does not interfere with other vehicular or pedestrian traffic lawfully using the intersection. Pedestrian traffic facing a steady circular red light shall not enter the roadway unless the pedestrian can safely cross the roadway without interfering with any vehicular traffic.
2. A "steady circular yellow" or "steady yellow arrow" light means vehicular traffic is warned that the related green movement is being terminated and vehicular traffic shall no longer proceed into the intersection and shall stop. If the stop cannot be made in safety, a vehicle may be driven cautiously through the intersection. Pedestrian traffic is warned that there is insufficient time to cross the intersection and any pedestrian starting to cross the roadway shall yield the right of way to all vehicles.
3. A "steady circular green" light means vehicular traffic may proceed straight, turn right or turn left through the intersection unless otherwise specifically prohibited. Vehicular traffic shall yield the right of way to other vehicular and pedestrian traffic lawfully within the intersection.
4. A "steady green arrow" light shown alone or with another official traffic control signal means vehicular traffic may cautiously enter the intersection and proceed in the direction indicated by the arrow. Vehicular traffic shall yield the right of way to other vehicles and pedestrians lawfully within the intersection.
5. A "flashing circular red" light means vehicular traffic shall stop and after stopping may proceed cautiously through the intersection yielding to all vehicles not required to stop or yield which are within the intersection or approaching so closely as to constitute a hazard, but then may proceed.
6. A "flashing yellow" light means vehicular traffic shall proceed through the intersection or past such signal with caution.
7. A "don't walk" light is a pedestrian signal which means that pedestrian traffic facing the illuminated pedestrian signal shall not start to cross the roadway in the direction of the pedestrian signal, and pedestrian traffic in the crossing shall proceed to a safety zone.
8. A "walk" light is a pedestrian signal which means that pedestrian traffic facing the illuminated pedestrian signal may proceed to cross the roadway in the direction of the pedestrian signal and shall be given the right of way by drivers of all vehicles.
9. A "solid red/flashing red" light means vehicular traffic facing the solid red signal shall stop before entering the nearest crosswalk at an intersection or at such other point as may be indicated by a clearly visible line and shall remain standing until the signal turns to flashing red. No turns shall be permitted while the signal remains solid red. Vehicular traffic facing the flashing red shall stop and proceed in accordance with subsection 5 above.
(Ord. #2690, 7/8/74; Ord. #3594, 10/24/88; '91 Rev.) [Ref. Iowa Code §321.257]
No person shall place, maintain, or display upon or in view of any highway any sign, signal, marking, or device which purports to be or is an imitation of or resembles an official parking sign, curb or other marking, traffic-control device or railroad sign or signal, or which attempts to direct the movement of traffic, or which hides from view or interferes with the effectiveness of any official traffic-control device or any railroad sign or signal, if such sign, signal, marking, or device has not been authorized by the State of Iowa with reference to highways under their jurisdiction, local authorities with reference to streets and highways under their jurisdiction, and no person shall place or maintain nor shall any public authority permit upon any highway any traffic sign or signal bearing thereon any commercial advertising. This shall not be deemed to prohibit the erection upon private property adjacent to highways of signs giving useful directional information of a type that cannot be mistaken for official signs.
Every such prohibited sign, signal, or marking is hereby declared to be a public nuisance and the authority having jurisdiction over the highway is hereby empowered to remove the same or cause it to be removed without notice. ('91 Rev.) [Ref. Iowa Code §321.259]
The City of Waterloo is hereby authorized to:
(1) designate and maintain by appropriate devices, marks or lines upon the surface of the roadway, crosswalks at intersections where, due to traffic conditions, there is particular danger to pedestrians crossing the street or roadway, and at such other places as traffic conditions require, and
(2) make lanes for traffic on street pavements at such places as traffic conditions require consistent with the traffic ordinances of this city.
(Ord. #3256, 1/17/83) ('91 Rev.)