CHAPTER 315:  TRAFFIC CONTROL DEVICES


SECTION 315.010:        AUTHORITY TO INSTALL TRAFFIC CONTROL DEVICES

The City Traffic Engineer shall place and maintain traffic control signs, signals, and devices when and as
required under the traffic ordinances of the City to make effective the provisions of said ordinances, and may
place and maintain such additional traffic control devices as he may deem necessary to regulate traffic under
the traffic ordinances of the City or under State law or to guide or warn traffic.  (Ord. No. KK176 §1, 6-7-71;
RSMo. 300.130)


SECTION 315.020:        MANUAL AND SPECIFICATIONS FOR TRAFFIC CONTROL DEVICES

All traffic control signs, signals and devices shall conform to the manual and specifications approved by the
State Highway Commission or resolution adopted by the legislative body of the City.  All signs or signals
required hereunder for a particular purpose shall so far as practicable be uniform as to type and location
throughout the City.  All traffic control devices so erected and not inconsistent with the provisions of this Title
shall be official traffic control devices.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.135)


SECTION 315.030:        OBEDIENCE TO TRAFFIC CONTROL DEVICES

Drivers of all vehicles except authorized emergency vehicles on official emergency trips are required to
observe the instructions of all official traffic devices placed under the provisions of this Chapter.  Such devices
shall include all lettered signs, all buttons, all curbing, all mechanical traffic signals, and all paint marks
placed upon the surface of the roadway.  Such devices shall be held to have the same authority as the
personal direction of a Police Officer.


SECTION 315.040:        WHEN OFFICIAL TRAFFIC CONTROL DEVICES REQUIRED FOR ENFORCE¬MENT
PURPOSES

No provision of this Title for which official traffic control devices are required shall be enforced against an
alleged violator if at the time and place of the alleged violation an official device is not in proper position and
sufficiently legible to be seen by an ordinarily observant person.  Whenever a particular Section does not state
that official traffic control devices are required, such Section shall be effective even though no devices are
erected or in place.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.145)


SECTION 315.050:        OFFICIAL TRAFFIC CONTROL DEVICES─PRESUMPTION OF LEGALITY

A.        Whenever official traffic control devices are placed in position approximately conforming to the
requirements of this Title, such devices shall be presumed to have been so placed by the official act or
direction of lawful authority, unless the contrary shall be established by competent evidence.

B.        Any official traffic control device placed pursuant to the provisions of this Title and purporting to conform
to the lawful requirements pertaining to such devices shall be presumed to comply with the requirements of
this Title, unless the contrary shall be established by competent evidence.  (Ord. No. KK176 §1, 6-7-71;
RSMo. 300.150)


SECTION 315.060:        TRAFFIC CONTROL SIGNAL LEGEND─RIGHT TURN ON RED LIGHT, WHEN

Whenever traffic is controlled by traffic control signals exhibiting different colored lights, or colored lighted
arrows, successively one at a time or in combination, only the colors green, red and yellow shall be used
except for special pedestrian signals carrying a word legend, and said lights shall indicate and apply to
drivers of vehicles and pedestrians as follows:

§ 315.060                                                                Lawson City Code                                                                        §
315.070

1.        Green indication.

a.        Vehicular traffic facing a circular green signal may proceed straight through or turn right or left unless a
sign at such place prohibits either such turn.  But vehicular traffic, including vehicles turning right or left, shall
yield the right-of-way to other vehicles and to pedestrians lawfully within the intersection or an adjacent
crosswalk at the time such signal is exhibited.

b.        Vehicular traffic facing a green arrow signal, shown alone or in combination with another indication,
may cautiously enter the intersection only to make the movement indicated by such arrow, or such other
movement as is permitted by other indications shown at the same time.  Such vehicular traffic shall yield the
right-of-way to pedestrians lawfully within an adjacent crosswalk and to other traffic lawfully using the
intersection.

c.        Unless otherwise directed by a pedestrian control signal as provided in Section 315.070, pedestrians
facing any green signal, except when the sole green signal is a turn arrow, may proceed across the roadway
within any marked or unmarked crosswalk.

2.        Steady yellow indication.

a.        Vehicular traffic facing a steady yellow signal is thereby warned that the related green movement is
being terminated or that a red indication will be exhibited immediately thereafter when vehicular traffic shall
not enter the intersection.

b.        Pedestrians facing a steady yellow signal, unless otherwise directed by a pedestrian control signal as
provided in Section 315.070 are thereby advised that there is insufficient time to cross the roadway before a
red indication is shown and no pedestrian shall then start to cross the roadway.

3.        Steady red indication.

a.        Vehicular traffic facing a steady red signal alone shall stop before entering the crosswalk on the near
side of the intersection or, if none, then before entering the intersection and shall remain standing until a
green indication is shown except as provided in paragraph 2 of this subdivision;

b.        The driver of a vehicle which is topped as close as practicable at the entrance to the crosswalk on the
near side of the intersection or, if none, than at the entrance to the intersection in obedience to a red signal,
may cautiously enter the intersection to make a right turn but shall yield the right-of-way to pedestrians and
other traffic proceeding as directed by the signal at the intersection, except that the State Highway
Commission with reference to an intersection involving a State highway, and local authorities with reference
to an intersection involving other highways under their jurisdiction, may prohibit any such right turn against a
red signal at any intersection where safety conditions so require, said prohibition shall be effective when a
sign is erected at such intersection giving notice thereof;

c.        Unless otherwise directed by a pedestrian control signal as provided in Section 315.070, pedestrians
facing a steady red signal alone shall not enter the roadway.

4.        In the event an official traffic control signal is erected and maintained at a place other than an
intersection, the provisions of this Section shall be applicable except as to those provisions which by their
nature can have no application.  Any stop required shall be made at a sign or marking on the pavement
indicating where the stop shall be made, but in the absence of any such sign or marking the stop shall be
made at the signal.  (Ord. No. KK176 §l, 6-7-71; RSMo. 300.155)


SECTION 315.070:        PEDESTRIAN CONTROL SIGNALS

Whenever special pedestrian control signals exhibiting the words "Walk" or "Don't Walk" are in place such
signals shall indicate as follows:

§ 315.070                                                                 Traffic Control Devices                                                                §
315.120

1.        "WALK".  Pedestrians facing such signal may proceed across the roadway in the direction of the signal
and shall be given the right-of-way by the drivers of all vehicles;

2.        "WAIT" or "DON'T WALK".  No pedestrian shall start to cross the roadway in the direction of such signal,
but any pedestrian who has partially completed his crossing on the walk signal shall proceed to a sidewalk or
safety zone while the wait signal is showing.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.160)


SECTION 315.080:        FLASHING SIGNALS

A.        Whenever an illuminated flashing red or yellow signal is used in a traffic sign or signal it shall require
obedience by vehicular traffic as follows:

1.        Flashing red (stop signal), when a red lens is illuminated with rapid intermittent flashes, drivers of
vehicles shall stop before entering the nearest crosswalk at an intersection or at a limit line when marked, or
if none, then before entering the intersection, and the right to proceed shall be subject to the rules applicable
after making a stop at a stop sign;

2.        Flashing yellow (caution signal), when a yellow lens is illuminated with rapid intermittent flashes,
drivers of vehicles may proceed through the intersection or past such signal only with caution.

B.        This Section shall not apply at railroad grade crossings.  Conduct of drivers of vehicles approaching
railroad grade crossings shall be governed by the rules as set forth in Section 335.090 of this Title.  (Ord. No.
KK176 §1, 6-7-71; RSMo. 300.165)


SECTION 315.090:        LANE DIRECTION CONTROL SIGNALS

When lane direction control signals are placed over the individual lanes of a street or highway, vehicular traffic
may travel in any lane over which a green signal is shown, but shall not enter or travel in any lane over which a
red signal is shown.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.170)


SECTION 315.100:        DISPLAY OF UNAUTHORIZED SIGNS, SIGNALS OR MARKINGS

No person shall place, maintain or display upon or in view of any highway an unauthorized sign, signal,
marking or device which purports to be or is an imitation of or resembles an official 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.  (Ord. No.
KK176 §l, 6-7-71; RSMo. 300.175)


SECTION 315.110:        INTERFERENCE WITH OFFICIAL TRAFFIC CONTROL DEVICES OR RAILROAD SIGNS OR
SIGNALS

No person shall without lawful authority, attempt to or in fact alter, deface, injure, knock down or remove any
official traffic control device or any railroad sign or signal or any inscription, shield or insignia thereon, or any
other part thereof.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.180)


SECTION 315.120:        AUTHORITY TO ESTABLISH PLAY STREETS

The City Traffic Engineer shall have authority to declare any street or part thereof a play street and to place
appropriate signs or devices in the roadway indicating and helping to protect the same.  (Ord. No. KK176 §1,
6-7-71; RSMo. 300.185)


§ 315.130                                                                Lawson City Code                                                                        §
315.150

SECTION 315.130:        PLAY STREETS

Whenever authorized signs are erected indicating any street or part thereof as a play street, no person shall
drive a vehicle upon any such street or portion thereof except drivers of vehicles having business or whose
residences are within such closed area, and then any said driver shall exercise the greatest care in driving
upon any such street or portion thereof.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.190)


SECTION 315.140:        CITY TRAFFIC ENGINEER TO DESIGNATE CROSSWALKS AND ESTABLISH SAFETY
ZONES

The City Traffic Engineer is hereby authorized:


.1.        To designate and maintain, by appropriate devices, marks, or lines upon the surface of the roadway,
crosswalks at intersections where in his opinion there is particular danger to pedestrians crossing the
roadway, and at such other places as he may deem necessary;

.2.        To establish safety zones of such kind and character and at such places as he may deem necessary
for the protection of pedestrians.  (Ord. No. KK176 §1, 6-7-71; RSMo. 300.195)


SECTION 315.150:        TRAFFIC LANES

A.        The City Traffic Engineer is hereby authorized to mark traffic lanes upon the roadway of any street or
highway where a regular alignment of traffic is necessary.

B.        Where such traffic lanes have been marked, it shall be unlawful for the operator of any vehicle to fail or
refuse to keep such vehicle within the boundaries of any such lane except when lawfully passing another
vehicle or preparatory to making a lawful turning movement.  (Ord. No. KK176 §l, 6-7-71; RSMo. 300.200)
Lawson Police Department,
City Ordinances, Title Three
Chapter 315