Watchly Safety Review

NICEST Car Horn Ever- DIY

Mark Rober

4:52 · 46.7M views · June 14, 2017

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Minor FlagsReviewed June 2026

1Minor Flag

3No Issues

This DIY car horn video is safe and genuinely educational for most kids, offering a fun engineering project with a positive message about road safety and respectful communication. The creator's enthusiasm for solving a real-world problem with creativity is infectious, and the only mild concern is a brief comedic ending involving a comically loud train horn used on pedestrians, which is played entirely for laughs but could model slightly inconsiderate behavior.

Content Breakdown · 4 Categories

Realistic Violence, Threats & WeaponsNot present

The only weapon-adjacent reference is a train horn used humorously on teenagers — no real threats, weapons demonstrations, or physical harm are depicted.

See evidence (1)

“Train horn used comedically on teenagers crossing the street while fidget spinning”end of video

Low-Quality, Extreme & Stunt ContentNot present

The comedic train horn blast at the end is a mild stunt moment but is brief and clearly framed as a joke punchline rather than the video's core content.

See evidence (1)

“Train horn used on pedestrians as a comedic finale gag”end of video

Playful & Fantasy ViolenceA little

The comedic train horn blast directed at teenagers and the brief sound of 'rapid gunfire' at the very end (likely a sound effect) qualify as very mild playful/stylized content with no realistic harm framing.

See evidence (2)

“Train horn blasted at teenagers fidget spinning — played entirely for laughs”end of video

“'(rapid gunfire)' sound effect noted in transcript at the video's end credits sequence”

Bullying, Cruelty & DiscriminationNot present

The joke about blasting teenagers with a train horn for 'taking their sweet time' while fidget spinning is very mild and clearly comedic with no hostile targeting of any group.

See evidence (1)

“'two teenagers are taking their sweet time to cross the street in front of you while fidget spinning' — followed by a comedic train horn blast”end of video

What Parents Need to Know

This video follows a creator who modifies his car to include a friendlier 'courtesy honk' alongside a powerful train horn, explaining the electronics and installation process along the way. It's genuinely educational — kids learn about car safety statistics, basic electronics (soundboards, amplifiers, wiring), and the value of clear, non-aggressive communication. The creator promotes a positive message about reducing road rage and being considerate to other drivers. The only minor flag is the comedic finale where the massive train horn is blasted at slow-moving teenagers, which is framed as a joke but could be seen as mocking or unkind. There is no language, violence, or inappropriate content of concern.

Talk to Your Kids About

1Why do you think the creator wanted a friendlier horn instead of just using the loud one? What does that tell us about how we should treat other people, even strangers?
2The video mentions that 1.3 million people die in car crashes every year. What are some ways drivers can communicate better to stay safe on the road?
3The creator used electronics like a soundboard, an amplifier, and a speaker to build his custom horn. Can you think of a problem in your own life that you could solve by building or making something?
4At the end, the creator uses the train horn on pedestrians as a joke. Do you think that was actually funny or a bit mean? How do you think the pedestrians felt?

Protected Viewing

What's This Video About?

This horn is SO courteous my car was granted Canadian citizenship yesterday. Check out Bob's video: https://youtu.be/smhMLsP5fsM My buddy Howard does this for a living: https://www.yelp.com/biz/caracoustics-santa-clara Links to the stuff I used (not sponsored): Sound board: https://www.amazon.com/gp/product/B00Q3U42DM/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Buttons: https://www.amazon.com/gp/product/B0144DKLW0/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Amp: https://www.amazon.com/gp/product/B01IMRXPFY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 PA Speaker: https://www.amazon.com/gp/product/B002KO63X2/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 12V to 5V: https://www.amazon.com/gp/product/B00U2DGKOK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Train Horn (not my exact version but this will work well): https://www.amazon.com/Wolo-847-858-Siberian-Express-Train/dp/B01DDCSOPE/ref=sr_1_4?ie=UTF8&qid=1497644803&sr=8-4&keywords=wolo+train+horn http://wolo-mfg.com/horns/truck-horns/model-805-challenger.html Less expensive version: https://www.amazon.com/Zone-Tech-Dual-Trumpet-Horn/dp/B00W81EAE6/ref=sr_1_2?ie=UTF8&qid=1497473330&sr=8-2&keywords=truck+horn ***LINKS FIXED*** Courtesy Honk WAV file: https://www.dropbox.com/s/joob9j13g1dgasc/CourtesyHonk.wav?dl=0 R2D2 WAV file: https://www.dropbox.com/s/233yzjket8pyuya/R2D2.wav?dl=0 MUSIC- 0:27- Ceral Killa- Blue Wednesday - https://soundcloud.com/bluewednesday/ 2:18- Berlin- Andrew Applepie- http://andrewapplepie.com/ 3:20- Dance- Danijel Zambo- https://soundcloud.com/danijel-zambo 4:38- Special song written just fo my bad self- Lincoln Hoppe, http://lincolnhoppe.com/ 5:33- Too Happy to be cool by Notebreak- https://soundcloud.com/notebreak/dubstep-too-happy-to-be-cool Summary: I customized my car horn to play three different sounds. The main sound is the "Courtesy Honk" which is used to get the attention of other drivers in a non-emergency scenario. It's two quick chirps of the horn that is not only friendly sounding, but it's not as loud as a normal car horn. PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub **************************************** I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK: https://www.facebook.com/MarkRoberYouTube TWITTER: https://twitter.com/#!/MarkRober INSTAGRAM: https://www.instagram.com/markrober/

Frequently Asked Questions

What age is this video appropriate for?

This video is suitable for kids aged 7 and up. The content is clean, educational, and focused on engineering and road safety, with no language or mature themes — the only mild concern is a brief comedic moment involving a very loud horn being used on pedestrians.

Is there any inappropriate language or content in this video?

No, there is no swearing, sexual content, or violent content in this video. It is clean throughout and suitable for a broad family audience.

Does this video teach kids anything valuable?

Yes — it introduces basic electronics concepts like wiring, amplifiers, and soundboards, and encourages a problem-solving mindset. It also touches on road safety statistics and the importance of respectful communication between drivers.

Is the train horn prank at the end a concern for younger kids?

It's very brief and played entirely as a joke, but the creator does blast an extremely loud horn at two teenagers walking slowly, which some parents may find models slightly unkind behavior. It's worth a quick conversation about why that might not be the nicest thing to do in real life.

Does the video promote any products or contain advertising?

The creator mentions specific products he bought on Amazon (like the Adafruit Soundboard) and references a friend's YouTube channel, but these feel like genuine recommendations rather than paid sponsorships, and the classification scores show no hidden advertising concerns.

Could kids try to replicate this project, and is it safe?

The project involves basic electronics and car wiring, which is best attempted with adult supervision and some prior knowledge. The creator intentionally keeps the tutorial high-level and directs viewers to a more detailed video by a collaborator, so it's not a step-by-step guide that young kids could easily follow unsupervised.