OPINION
Appellant Wayne Earl Dahl challenges his conviction of violating Fridley, Minn., City Code § 214.04.6 (2002), which prohibits the use of “motion signs” throughout Fridley.
1
He argues the ordinance is facially unconstitutional under the First Amendment of the United States Constitution. We conclude the ordinance is a valid time, place, or manner regulation under the test set out in
Ward v. Rock Against Racism,
FACTS
Dahl operates a chiropractic clinic on the corner of Osborne Road and Highway 65 in Fridley. For many years he displayed an alternating “time and temperature” sign on top of a traditional, flat advertising sign at his clinic. Between December 2000 and January 2001, Dahl decided he wanted an automatic changeable sign “so that we could provide public service messages, et cetera.”
In early 2001, Dahl applied for, and Fridley granted him, a special use permit to operate an automatic changeable sign. Under Fridley, Minn., City Code 214.07.1.A (2002), the special use permit is issued subject to “[cjonformance to the sign requirements within that district.” Fridley, Minn., City Code § 214.04.6, which prohibits the use of “motion signs,” applies to all districts within Fridley. Scott Hickok, Fridley’s community development director, testified that Dahl had obtained a special use permit to operate an automatic changeable sign, but the special use permit was granted upon the conditions that (1) the sign be operated within all of the confines of the law, (2) a building permit be obtained, and (3) the sign be constructed in accordance with the law. Hickok is responsible for enforcing Fridley’s city code.
*308 Dahl’s new sign was installed in late December 2001. Dahl testified he initially let the sign sit blank because he was unsure what the sign could display. In March 2002, Dahl turned the sign on, displaying the message “Walk In For Better Health,” accompanied by flickering snowflakes. That evening, Sergeant Crestik of the Fridley police issued Dahl two citations for violating Fridley’s sign ordinances.
On Monday morning, Dahl contacted Hickok to discuss his situation. Dahl attended a meeting that day with Hickok, the city attorney, and Paul Bolin. Dahl testified that at this meeting the city told him the citations had been issued because the snowflakes “flash[ed]” and that when the message spread apart before changing, the sign created the illusion of motion and therefore violated the city’s sign ordinances.
At this meeting, the discussion moved from the message that was displayed to whether Fridley would cite Dahl for displaying a waving American flag. Dahl testified that he was told, “If you [display the flag] we want to know when you’re going to do it because we don’t want the police to have to be on over-time when they arrest you.” Dahl then countered with, “How about seven o’clock on Thursday night?” Hickok, however, testified to a very different version of the flag discussion. He testified, Fridley’s statement was, “The American flag is fine, but don’t run contrary to those two elements that have been discussed.” Hickok testified that Dahl responded, “I’m going to turn it on. As a matter of fact, let me give you the date and time.... And if the city doesn’t want to change the code, I will embarrass them into doing so.”
At approximately 7 p.m. on Thursday, April 3, 2002, Dahl turned on the sign displaying a waving American flag. He was issued a citation for violating the sign ordinances. He was also issued additional citations thereafter.
The city charged Dahl with four counts of violating Fridley, Minn., City Code § 214.04.6 for operating a sign displaying motion, four counts of violating Fridley, Minn., City Code § 214.04.4 (2002) for operating a sign that caused traffic distraction, four counts of violating Fridley, Minn., City Code § 214.04.7 (2002) for operating a sign using flashing lights, four counts of violating Fridley, Minn., City Code § 214.07.1 (2002) for operating a sign with messages changing more than every 15 minutes, and four counts of violating Minn.Stat. § 609.74, subd. 2 (2000), for operating a sign that caused a distraction that endangered or harmed passing motorists. Dahl moved to dismiss the complaint, and the trial court issued an order dismissing the charges for distracting traffic under Fridley, Minn., City Code § 214.04.4 and the charges for operating a sign with messages changing more frequently than 15 minutes under Fridley, Minn., City Code § 214.04.07.1.
The case proceeded to trial on the charges of displaying a motion sign and a flashing sign under city ordinances, and endangering or harming motorists under Minn.Stat. § 609.274. The jury found Dahl not guilty of displaying a flashing sign and not guilty of causing a distraction that endangered or harmed passing motorists but found him guilty of displaying a motion sign. The court sentenced Dahl on all four counts of displaying a motion sign to identical, concurrent sentences of 30 days in jail, stayed, and a $700 fíne, $300 of which was stayed.
ISSUE
Is a city ordinance that prohibits operating signs that revolve, rotate, have moving parts, or give the illusion of motion an *309 unconstitutional abridgement of the freedom of speech?
ANALYSIS
Dahl argues the motion sign ordinance violates the First Amendment to the United States Constitution. Evaluating the constitutionality of a statute is a question of law, which this court reviews de novo.
Hamilton v. Comm’r of Pub. Safety,
Under Fridley city code, a “motion sign” is a “sign which revolves, rotates, has moving parts or gives the illusion of motion.” Fridley, Minn., City Code § 214.02.19 (2002). Another provision of the code lists signs that are prohibited in all districts of the city. Fridley, Minn., City Code § 214.04 (2002). Included in the list of prohibited signs are “[a]ny motion signs.” Fridley, Minn., City Code § 214.04.6.
The First Amendment provides that “Congress shall make no law ... abridging the freedom of speech.” U.S. Const. amend. I. The freedom of speech clause applies to the states through the Fourteenth Amendment,
44 Liquormart, Inc. v. Rhode Island,
If a provision seeks to limit when, where, or how means of expression may be used, it is analyzed to determine if it is a valid “time, place, and manner” regulation.
Hill v. Colorado,
The Fridley motion-sign ordinance serves the government’s substantial and content-neutral interest and leaves open ample alternative channels. The prohibition of motion signs does not disfavor any message and therefore is a content-neutral regulation.
See Ward,
*310
Finally, the regulation leaves open ample alternative channels because it allows any speech on a sign that does not revolve, rotate, have moving parts, or give the illusion of motion.
See Ward,
In examining whether a time, place, or manner regulation is narrowly tailored to serve the government interest there is a crucial distinction to be made when the regulation “does not entirely foreclose any means of communication.”
Hill,
Here, the city code only prohibits the manner in which signs can operate. It does not prevent use of signs as a means of communication; any message can be displayed on a sign as long as the sign does not revolve, rotate, use moving parts, or give the illusion of motion. Fridley determined that its legitimate goal of preventing traffic accidents would be served less effectively if motion signs were not prohibited. We see no reason to conclude such a common-sense determination is unreasonable, and therefore we defer to Fridley’s decision to prohibit motion signs in order to promote traffic safety.
Dahl also argues that the evidence was “insufficient as a matter of law” to support his conviction for operating a motion sign because Fridley had granted him a special use permit to operate an automatic changeable sign and it is “physically] impossible to change the message on an automatic changeable sign without engaging in what the sign ordinance would deem ‘flashing’ or ‘motion.’ ” Under the ordinance that allowed the city to issue the special use permit, the permit is issued subject to “[cjonformance to the sign requirements within that district.” Fridley, Minn., City Code 214.07.1.A. Since the prohibition against motion signs applies throughout Fridley, a special use permit for an automatic changeable sign does not excuse the grantee from the prohibition against motion signs.
Dahl also argues he is entitled to a new trial because “it was plain error to exclude the testimony of [a witness].” Since he provides no legal argument or authority and we see no obvious prejudicial error, we deem this issue waived.
See State v. Modern Recycling, Inc.,
DECISION
The Fridley city ordinance prohibiting motion signs does not violate the First Amendment. The evidence is sufficient to support Dahl’s conviction.
Affirmed.
Notes
. The Fridley city clerk has certified that the provisions of the city code cited in this opinion were in effect in 2002 during the events at issue. We have relied on the certification by the city clerk and refer to all provisions as though actually issued in 2002.
. Contrary to Dahl’s contention, parts I through IV of
Metromedia
express the opinion of a majority of the Supreme Court.
See Metromedia,
