An integral part of pop or popular culture is extending one's expression of style to his vehicle. Fads may be short lived, but what is more important is that it reveals strange and unique ways of expressing ideas. Car styling has, in agreeable yet unconventional ways, been able to create certain fads by beefing up the appearance of the vehicle. From window tinting to trim applications, vehicles have been stylized in accordance with the popular trends. Example may be cited of train horns being used in street vehicles roused some positive and also some negative impressions, but it was a bold statement nonetheless. The fads that train horns have created in pop culture appeals to the artistry, image and also annoyance of different groups of people.

The conventional uses of train horns are for signaling or cautionary applications. It is once used in trains to caution its presence and proximity to stations and into sports to cue certain actions in the game proceedings. Today, deviant behaviors brought the use of train horns into custom designed vehicles. To enjoy louder, aggressive and intimidating honking down the street, some vehicle owners have replaced original car horns with the monstrous pipes of customized train horns.

Although some people may not understand why certain vehicle owners spend a lot of money in restyling and modifying their vehicles, some perceive the act as a matter of self-gratifying expressions. While having wing doors and lowered car frames and bumpers may seem sleek and original to some group, some would differ from their preferences. All of this is a matter of expressions of views towards the existing popular culture. The popularity of using train horns as truck or car horns exemplified the impact of the fad brought by train horns in popular culture.

The train horn can be used in many ways as a medium of expression. It could be used in a noisy classroom to bring about immediate silence. It can be used on telemarketers or other harassing callers, who, after hearing a loud train horn on the phone, might abstain from calling in future. It can also be used in music, blended with other instruments, especially in genres like reggae or reggae hybrid. The most popular application of the train horn, however, remains its use as a truck horn.

There's a curious legal problem associated with the use of train horns in cars. Using a train horn is a mode of the right of self-expression and can this right be denied to any citizen. Yes, perhaps it can if it's harming or disturbing others. Imposing decibel level restrictions was tried out once but the police found it impossible to enforce. The owners install them precisely for their loudness! But the horns are sold with markings indicating loudness that's different from what is achieved, so clear proof of violation is impossible! Environmental sensitivity and consideration are needed but today's macho show-offs lack both.