No person shall be permitted to operate or allow to be operated an internal combustion engine powered vehicle on any posted public ways, including, but not limited to, streets, alleys, easements, or rights-of-way established for vehicle operation within the city. This section is not intended to prohibit the passage of vehicles equipped with engine or jake brakes in posted areas, but rather limit the use of such equipment in posted areas.
(Ordinance adopted 7/24/07; Ordinance adopting 2022 Code)
The driver of a vehicle intending to turn at an intersection shall do so as follows:
(1) 
Right turns.
Both the approach for a right turn and a right turn shall be made as close as practicable to the right-hand curb or edge of the roadway.
(2) 
Left turns on two-way roadways.
At any intersection where traffic is permitted to move in both directions on each roadway entering the intersection, an approach for a left turn shall be made in that portion of the right half of the roadway nearest the centerline thereof and by passing to the right of such centerline where it enters the intersection and after entering the intersection the left turn shall be made so as to leave the intersection to the right of the centerline of the roadway being entered.
(3) 
Left turns on other than two-way roadways.
At any intersection where traffic is restricted to one direction on one or more of the roadways, the driver of a vehicle intending to turn left at any such intersection shall approach the intersection in the extreme left-hand lane lawfully available to traffic moving in the direction of travel of such vehicle and after entering the intersection the left turn shall be made so as to leave the intersection in the left-hand lane lawfully available to traffic moving in such direction upon the roadway being entered.
(4) 
The city traffic engineer may cause markers, buttons, or signs to be placed within or adjacent to intersections and thereby require and direct that a different course from that specified in this section be traveled by vehicles turning at an intersection, and when markers, buttons, or signs are so placed no driver of a vehicle shall turn a vehicle at an intersection other than as directed and required by such markers, buttons, or signs.
(Ordinance 1006, sec. 57, adopted 11/6/67; 1996 Code, sec. 10.601)
The state traffic laws regulating the speed of vehicles shall be applicable upon all streets within this city, except as this article, as authorized by state law, hereby declares and determines upon the basis of engineering and traffic investigation that certain speed regulations shall be applicable upon specified streets or in certain areas, in which event it shall be prima facie unlawful for any person to drive a vehicle at a speed in excess of any speed so declared in this article or determined by the city when signs are in place giving notice thereof.
(Ordinance 1006, sec. 52, adopted 11/6/67; 1996 Code, sec. 10.501; Ordinance adopting 2022 Code)
Whenever the city traffic engineer shall determine upon the basis of an engineering and traffic investigation that the thirty (30) miles per hour speed herein before set forth is greater or less than is reasonable or safe under the conditions found to exist at any intersection or other place or upon any sort of a street or highway, said traffic engineer may determine and declare a reasonable and safe speed limit and the change shall be effective at all times when appropriate signs giving notice thereof are erected at such intersection or other place or part of the highway or street.
(Ordinance 1006, sec. 54, adopted 11/6/67; 1996 Code, sec. 10.503)
The city traffic engineer is authorized to regulate the timing of traffic signals so as to permit the movement of traffic in an orderly and safe manner at speeds slightly at variance from the speeds otherwise applicable within the district or at intersections and shall erect appropriate signs giving notice thereof.
(Ordinance 1006, sec. 55, adopted 11/6/67; 1996 Code, sec. 10.504)
The speed limitations set forth in this article are not applicable to authorized emergency vehicles when responding to an emergency call, or when used in the pursuit of an actual or suspected violator of the law, or when responding to but not upon returning from a fire alarm, and the driver thereof sounds audible signal by bell, siren or exhaust whistle. This provision shall not relieve the driver of an authorized emergency vehicle from the duty to drive with due regard for the safety of all persons using the street or roadway, nor shall it protect the driver thereof from the duty to use ordinary care under the circumstances.
(Ordinance 1006, sec. 56, adopted 11/6/67; 1996 Code, sec. 10.505)