delivered the opinion of the Court.

. This case presents two unrelated questions.. Appellant challenges his Kentucky conviction for disorderly eondüct on the ground that the conviction and the State’s' statute are repugnant to the First and Fourteenth Amendments. He also challenges the constitutionality of the enhanced penalty he .received under Kentucky’s two-tier system for adjudicating certain criminal cases, whereby a person charged with a misdemeanor may be tried first in an inferior court and, if dissatisfied with the outcome, may have a trial de novo in a court of general[*106] criminal jurisdiction but must run the risk, if convicted, of receiving a greater punishment.

Appellant Colten and 15 to 20 other college students . gathered at the Blue Grass Airport outside Lexington, Kentucky, to show their support for a state gubernatorial' candidate and to demonstrate their lack of regard for Mrs. Richard Nixon, then about to leave Lexington from the airport after a public appearance in the city. When the demonstration had ended, the students got into their automobiles and formed a procession of six to 10 cars along the airport access road to 'the main high-' way. A state "policeman, observing that one of the first cars in the entourage carried an expired Louisiana license plate, directed the driver,' one Mendez, to pull, off the road.. He complied. Appellant Colten, followed by other motorists in the procession, also pulled off the highway, and Colten approached the officer to find out what was the matter. The policeman explained that the Mendez car bore an expired plate and that a traffic summons would be issued. Colten made some effort to enter into a conversation about the summons. His theory was that Mendez .may have received an extension of time in which to obtain new plates. In order to avoid Colten and to complete the issuance of the summons, the policeman took Mendez to the patrol car. Meanwhile, other students had left their cars and additional policemen, having completed their duties at the airport and having noticed the roadside scene, stopped their cars in the traffic lane abreast of the students’ vehiclés. At least one officer took responsibility for directing traffic, although testimony differed as to the need for doing so. * Testimony also differed as to the. number, of policemen and students present, how many students left their cars and how many were at one time or another standing in the roadway. A state police captain asked on four .pr five occasions that the group disperse. At least five times[*107] ■police asked Colten to leave.^[1] A state trooper made two requests, remarking at least once: “Now, this is none of your affair . . . get back-in your car and please move on and clear the road.” In. response to at least one of these requests Colten replied that he wished to make a transportation arrangement for his friend Mendez and the occupants of the Mendez car, which he Understood was to be towed away. - Another officer asked' three times that Colten depart and when Colten failed to move away he was arrested for violating Kentucky’s disorderly conduct statute, Ky. Rev. Stat. §437.016 (Supp. 1968). The arresting officer testified that Colten’s response to the order had been to say that he intended to stay and see what might happen. Colten disputed this. He testified that he expressed a willingness to leave but wanted first to make a transportation arrangement. At trial he added that he feared violence on the part of the police.^[2]

The complaint and warrant 'charging disorderly conduct, which carries a maximum penalty of six months in jail and a fine of $500, were addressed to the Quarterly[*108] Court of Fayette County, where Colten was tried, convicted, and fined $10. Exercising his right to a trial de novo in a court of general jurisdiction, Colten “appealed,” as the Kentucky rules style this recourse, Ky. Rule Crim. Proc. 12.02, to the Criminal Division of the Fayette Circuit Court. By.consent,- trial was tó the court and Col-ten was convicted of disorderly conduct and this time fined $50. The Kentucky Court of Appeals .affirmed. Colten v. Commonwealth, 467 S. W. 2d 374 (1971). It rejected Colten’s constitutional challenges to the statute and his claim that the punishment imposed was impermissible, under North Carolina v. Pearce, 395 U. S. 711 (1969). We noted probable jurisdiction. 404 U. S. 1014 (1972).

I

Colten was convicted of violating Ky. Rev. Stat. § 437.016 (l)(f) (Supp. 1968), which states:

“(1) A person is guilty of disorderly conduct if, with intent to cause public inconvenience, annoyance or alarm, or recklessly creating a risk théreof, he:

“(f) Congregates with other persons in a public place and refuses to comply with a lawful order of the police to disperse'. ...”

The Kentucky Court of Appeals interpreted the statute in the following way:

“As- reasonably construed, the statute does not prohibit the lawful exercise of any constitutional right. We think that the plain meaning of the statute, in requiring that the proscribed conduct be done ‘with intent to cause public inconvenience, annoyance or alarm, or recklessly creating a risk thereof,’ is that the specified intent must be the predominant intent. Predominance can be determined-either (1) from the fact that no bona fide intent to exercise a constitu[*109]tional right appears to háve existed or (2) from the faqt that the interest to be advanced by the particular exercise of a constitutional right is insignificant in comparison with the inconvenience, annoyance or alarm caused by the exercise.” 467 S. W. 2d, at 377.

The evidence warranted a finding, the Kentucky court concluded, that at the time of his arrest, “Colten was not undertaking to exercise any constitutionally protected freedom.” Rather, he “appears to have had no purpose other than, to cause inconvenience and annoyance. So the statute as applied here did not chill or stifle the exercise of any constitutional right.” Id., at 378.

Based on our own examination of the record, we perceive no justification for setting aside the conclusion of the state court that when arrested appellant was not engaged in activity protected by the First Amendment. Colten insists that in seeking to arrange transportation for Mendez and in observing the issuance of a trafile citation he was disseminating and receiving information. But this is a strained, near-frivolous contention and we have little doubt that Cólten’s conduct in refusing to move on after being directed to do so was not, without more, protected by the First Amendment. Nor can we believe that Colten, although he, was not trespassing or disobeying any traffic regulation himself, could not be required to move on. He had no constitutional right to observe the issuance of a traffic ticket or to engage the issuing officer in conversation at that time. The State has a legitimate interest in enforcing its traffic laws and its officers were entitled to enforce them free from possible interference or interruption from bystanders, even those claiming a third-party interest in the transaction. Here the police had cause for apprehension that a roadside strip, crowded with persons and automobiles, might expose the. entourage, passing motorists, and police to the risk of accident. We cannot disagree with the finding[*110] below that the order to disperse was suited to the occasion. We thus see nothing • unconstitutional in the manner in which the statute was applied.

II

Neither are we convinced that the statute is either impermissibly vague or broad. We perceive no violation of “[t]he underlying principle . . . that no man shall be held criminally responsible for conduct which he could not reasonably understand to be proscribed.” United States v. Harriss, 347 U. S. 612, 617 (1954); cf. Connolly v. General Construction Co., 269 U. S. 385, 391 (1926). Here the statute authorized conviction for refusing to disperse with the intent of causing inconvenience, annoyance, or alarm. Any person who stands in a group of persons along a highway where the police are investigating a traffic violation and seeks to engage the attention of an officer issuing a summons should understand that he could be conyicted under subdivision (f) of Kentucky’s statute if he fails to obey an order to move on. The root of the vagueness doctrine is a rough idea of fairness. It is not a principle designed to convert into a constitutional dilemma the practical difficulties in drawing criminal statutes both general enough to take into account a variety of human conduct and sufficiently specific to provide fair warning that certain kinds of conduct are prohibited. • We agree with the Kentucky court when it said: “We believe that citizens who desire to obey the statute will have no difficulty in understanding it . . , .” Colten v. Commonwealth, 467 S. W. 2d, at 378.

Colten also argues that the Kentucky statute is over-broad. He relies on Cox v. Louisiana, 379 U. S. 536 (1965), where the Court held unconstitutional a breach-of-peace statute construed to forbid causing agitation or[*111] disquiet coupled with refusing to move on when ordered to do so. The Court invalidated the statute on the ground that it permitted conviction where the mere expression of unpopular views prompted the order that is disobeyed. Colten argues that the Kentucky statute must be stricken down for the same reason. '

As the Kentucky statute was construed by the state court, however, a crime is committed only where there is no bona fide intention to exercise a constitutional right — in which event, by definition, the statute infringes no protected speech or conduct — or where the interest so clearly outweighs the collective interest sought to be asserted that the latter, must be deemed insubstantial. The court hypothesized, for example, that one could be convicted for disorderly conduct if at a symphony concert he arose and began lecturing to the audience on leghorn chickens. 467 S. W. 2d, at 377. In so confining the reaeh of its statute, the Kentucky court avoided the shortcomings of the statute invalidated in the Cox case. Individuals may not be convicted under the Kentucky statute merely for expressing unpopular or annoying ideas. The statute, comes into operation only when the, individual’s interest in expression, judged in the light of all relevant factors, is “minuscule” compared to a- particular public interest in preventing that' expression or conduct at that time and place. As we understand this case, appellant’s own conduct was not immune under the First Amendment and neither is his conviction vulnerable on the ground that the statute threatens constitutionally protected conduct of others.^[3]

[*112] Ill

Kentucky, like many other States,^[4] has a two-tier system for adjudicating less serious criminal cases. Iri Kentucky, at the option of the arresting officer, those crimes classified under state law as misdemeanors ^[5] may be charged and tried in a so-called inferior court,^[6] where, as in the normal trial setting, a defendant may- choose to have á trial or to plead guilty: If convicted after .trial or on a guilty plea, however, he has a right to a trial de novo in a court of general criminal jurisdiction, Brown v. Hoblitzell, 307 S. W. 2d 739 (Ky. 1957), so[*113] long as he applies within the statutory time.^[7] The right to a new: trial is absolute. A defendant need not allege error in the inferior court proceeding. If he seeks a new trial, the Kentucky statutory scheme contemplates that the slate be wiped clean. Ky. Rule Crim. Proc. 12.06. Prosecution and defense begin anew. By the same token neither the judge nor jury that determines, guilt or fixes a penalty in the trial de novo is in any way bound by the inferior court’s findings or judgment. The case is to be regarded exactly as if it had been brought there in the first instance. A convicted defendant may seek review in the state appellate courts in the same manner as a person tried initially in the general criminal court. Ky. Rev. Stat. § 23.032.(Supp. 1968). However, a defendant convicted after a trial or plea in an inferior court may not seek ordinary appellate review of the inferior court’s ruling. His recourse is the trial de novo.

While by definition two-tier systems throughout the States have in common the trial dé novo feature,^[8] there are differences in the kind of trial available in the inferior courts of first instance, whether known as county, municipal, police, or justice of the peace courts, or are otherwise referred to. Depending upon the jurisdiction and offense charged, many such systems provide as complete protection for a criminal defendant’s constitutional rights as do courts empowered to try more serious crimes. Others, however, lack some of the safeguards provided in more serious, criminal cases. Although appellant here was entitled to a six-man jury, cf. Williams v. Florida, 399 U. S. 78 (1970), which he waived, some[*114] States do .not provide for trial by jury,^[9] even in instances where the authorized punishment would entitle the accused'to such tribunal. ,Cf. Duncan- v. Louisiana, 391’ U. S. 145 (1968).' Some, including Kentucky, do not record proceedings^[10] and the judges may not be trained for their positions éither by experience or schooling.^[11]

Two justifications are asserted for such tribunals: first, in this day of increasing burdens on state-judiciaries, these courts are designed, in the interest of both the defendant and the State, to provide speedier and less costly adjudications than may be possible in the criminal courts of general jurisdiction where the full range of constitutional guarantees is available; second, if the' defendant is not satisfied with the results of his first trial he has the unconditional right to a new trial in a superior court, unprejudiced by the proceedings or the outcome in the. inferior courts. Colten, however, considers the Kentucky system to be infirm because the judge in a trial de novo is empowered to sentence anew and is, not bound- to stay within the limits of the sentence imposed by the inferior court. He bases his attack both on the Due Process Clause, as interpreted in North Carolina v. Pearce, 395 U. S. 711 (1969), and on the Fifth Amendment's Double Jeopardy Clause. The[*115] issues appellant raises Nave produced a division among the state courts that have considered' them^[12] as. well as a conflict among the federal circuits.^[13]

Colten rightly reads Pearce to forbid, following a successful appeal and reconviction,- the imposition of a greater punishment than was imposed, after the first trial, absent specified findings that have not been made' here. He insists that the Pearce rule is applicable here and that there is no relevant difference, between the Pearce model and the Kentucky two-tier trial de novo system; Both, he asserts, involve recon-viction and resentencing, both provide the convicted de- . fendant with the right to-“appeal” .and in both — even though under the Kentucky scheme the “appeal” is in reality a trial de novo — a penalty for the same crime is fixed' twice, with the same potential for an increased penalty upon a successful “appeal.”

[*116] But Pearce did not turn simply on the fact of conviction, appeal, reversal, reconviction, and a greater sentence. The court was there concerned with two defendants who, after their' convictions had been set aside on appeal, were reconvicted for the same offenses and sentenced to longer prison terms. In one case the term was increased from 10 to 25 years. Positing that a more severe penalty after reconviction would violate due process of law if imposed as purposeful punishment for having successfully appealed, the court concluded that such untoward sentences occurred with sufficient frequency to warrant the imposition of a prophylactic rule to ensure “that vindictiveness against a defendant for having successfully attacked his first conviction . . . [would] play no part in the sentence he receives after a new trial . . .” and to ensure that the apprehension of such vindictiveness does not “deter a defendant’s exercisé of the right to appeal or collaterally attack his first conviction _” ' 395 TJ. S., at 725.

Our view of the Kentucky two-tier system of administering criminal justice, however, does not lead us to believe, and there is nothing in the record' or presented in the briefs to show, that the hazard of being penalized for seeking a new trial, which underlay the holding of Pearce, also .inheres in the de novo trial arrangement. Nor are we convinced that defendants convicted in Kentucky’s inferior courts would be deterred from seeking a second trial out of fear of judicial vindictiveness. The possibility of vindictiveness, found to exist in Pearce, is not inherent in the Kentucky two-tier system.

We note first the obvious: that the court which conducted Colten’s trial and imposed the final sentence was not the court with whose work Colten was sufficiently dissatisfied to seek a different result on appeal; and it[*117] is not the court that is asked to do over what it thought it had already done correctly. Nor is the de novo court even asked to find error in another court’s work. Rather, the Kentucky court in which Colten had the unrestricted-right to have a hew trial was merely asked to accord the same trial, under the same rules and procedures, available to defendants whose cases are begun in that court in the first instance. It would also appear that, however understandably a court of general jurisdiction might feel that the defendant who has had a due process trial ought to be satisfied with it, the de novo court in the two-tier system is much more likely to reflect the attitude of the Kentucky Court of Appeals in this case when it stated that “the inferior courts are not designed or. equipped to conduct error-free trials, or to insure full recognition of constitutional freedoms. They are courts of convenience, to. provide speedy and inexpensive means of disposition of charges of minor offenses.” Colten v. Commonwealth, 467 S. W. 2d, at 379. We see no reason, and none is offered, to assume that the de novo court will deal, any more strictly with those who insist on a'trial in the superior court after conviction in the Quarterly Court than it' would with those defendants . whose cases are filed originally in the superior court and who choose to put the State to its proof in a trial subject to constitutional guarantees.

It may often be that the superior court will impose a punishment more severe than that received from the inferior court. But. it no more follows that such a sentence is a vindictive penalty for seeking \ superior court trial than that the inferior court imposed a lenient penalty. The trial de novo represents a completely fresh determination of guilt or innocence. It is not an appeal on the record. As far as we know, the record from the lower court is not before the superior court and is irrelevant[*118] to its proceedings. In all likelihood, the trial de novo court is not even informed of the sentence imposed in the inferior court and can hardly be said to have “enhanced” the sentence.^[14] In Kentucky, disorderly conduct is punishable by six months in jail and a fine of-$500. The inferior court fined Colten $10, the trial de novo court $50. We haive no -basis for concluding that the latter court did anything other than invoke the normal processes of a criminal trial and then sentence in accordance with the normal standards applied in that court to cases tried there in' the first instance. We cannot conclude, on the basis of the present record or our understanding, that the prophylactic rule-announced in Pearce is appropriate in the context of the system by which Kentucky administers criminal justice in the less serious criminal cases.

It is suggested, however, that the sentencing strictures imposed bj Pearce are essential in order to minimize an asserted unfairness to criminal defendants who must endure a trial in an inferior court with less-than-adequate protections in order to secure a trial comporting completely with constitutional guarantees. We are not persuaded, however, that the Kentucky arrangement' for dealing with the less serious offenses disadvantages defendants any more or any less than trials conducted in a court of general jurisdiction in the first instance, as long as the latter are always available'. Proceedings in the inferior courts are simple and speedy, and, if the results in Colten’s case are any evidence, the penalty is not characteristically severe. Such proceedings offer, a defendant the opportunity to learn about the prosecution’s case and, if he chooses, he need not reveal his own. He may[*119] also plead guilty without a trial'and promptly secure a dé novo trial in a court of general criminal jurisdiction. He cannot, and .will not, face the realistic threat of a prison sentence in the inferior court without having the help of counsel, whose advice will also be available in determining whether to seek a new trial, with the slate wiped clean, or to' accept the penalty imposed by the inferior court. The State has no such options. Should it not prevail in the lower court, the case is terminated, whereas the defendant has the choice of beginning anew. In reality his choices are to accept the decision of the judge and the sentence imposed in the inferior court or to reject what in effect is no more than an offer in settlement of his case and seek the judgment of judge or jury in the superior court, with sentence to be determined by the full record made in that court. We cannot say that the Kentucky trial de novo system, as such, is unconstitutional or that it presents hazards warranting the restraints called for in North Carolina v. Pearce, particularly since such restraints might, to the detriment of both defendant and State, diminish the. likelihood that inferior courts would'impose lenient sentences ’whose effect would be to limit the discretion of a superior court judge or jury if the defendant is retried and found guilty.

Colten’s alternative contention is that the Double Jeopardy Clause prohibits the imposition of an enhanced penalty upon reconviction. The Pearce Court rejected the same contention in the context of that case, 395 U. S., at 719-720. Colten urges that his claim is stronger because the Kentucky system forces a defendant to expose himself to jeopardy as a price for securing a trial that comports with the Constitution. That was, of course, the situation in Pearce, where reversal of the first conviction was for constitutional error. The contention also ignores that ^ defendant can bypass the inferior court simply by pleading guilty and erasing immediately[*120] thereafter any consequence that would otherwise follow from tendering the plea.

The judgment of the Kentucky Court of Appeals is

Affirmed.