How To Know If a Bike Is Street Legal? 15 Ways that Will Surprise You

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How To Know If a Bike Is Street Legal? A bike is street-legal if it has a headlamp, a taillamp, a brake light, reflectors, brakes, mirrors, a horn or warning device, tires, turn signals, and fenders. Moreover, you also need to have a valid license plate, registration, inspection certificate, and insurance.

Riding a motorbike is nothing short of exhilarating. The stimulating effect of speed and adrenaline makes one feel liberated from everyday worries. However, owning a bike is not as simple as it used to be, and you need to be mindful of specific parameters. So, what makes a bike street legal?

This article will dig deep into the requirements a bike needs to abide by to be street-legal. I’ll explain all the prerequisites that need to be handled before you can legally operate your motorcycle on the streets. Let’s get started!

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How To Know If a Bike Is Street Legal

How To Know If a Bike Is Street Legal?  What Factors Determine the Street Legality of a Bike?

Owning a bike comes with specific responsibilities – responsibilities that you owe to society. 

In today’s world, it would be irresponsible for a rider to blaze through the city streets without having the proper equipment that makes the vehicle street-legal. And I’m not even talking about getting in trouble with the law. I’m trying to emphasize each rider’s social responsibility to their fellow motorists, drivers, and pedestrians on the road. 

Suppose you’re riding down the highway without turn signals. You wouldn’t be able to indicate your intention to switch lanes or make a turn to the motorists behind you, which could lead to an ugly situation. 

Keep in mind that each state in the US has slightly different requirements for a bike to be qualified as street legal. What might be permitted in one state could be illegal in another. Therefore, consult your local government if you’re considering buying a motorcycle. 

Below are some of the most common elements a bike needs to be equipped with to operate safely and legally in most states. 

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1. Headlamp

The headlamp of a motorcycle is a crucial part when it comes to visibility. It enables the rider to see in the dark and increases your road presence. Most of the time, motorists and drivers crash into bikes primarily because they do not see them. Having a headlight prevents that from happening. 

Additionally, some states require motorcycles to always have a headlight on. With the headlights always on during the day and night this can make the rider more visible and help to prevent someone from crashing into you when you’re in a shaded area. It increases your road presence. Check your local state laws to be sure whether this is a requirement. 

Furthermore, some states have laws that require a motorcycle to have a low and high-beam switch that is easily accessible to the rider. How to know if a bike is street-legal? The first good evidence is if it has a headlight.

If you’re buying a motorcycle, ensure it has a functional headlight with a high and low-beam setting. A high-quality headlamp will allow you to see the road ahead at night and help you stay visible during harsh weather conditions. 

Alternatively, suppose you’re trying to transform your dirt bike into a street-legal motorcycle. In that case, you’ll find a lot of value in buying PAKRY’S U5 Motorcycle Headlight (available on This product comes with three different modes, which include high and low-beam settings, and it can be compatible with most motorcycle makes and models. 

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2. Brakes

All street-legal motorcycles manufactured in and after 1971 should have proper and functional brakes to stop the bike. Motorcycles should have a front brake and rear brake to execute stopping power. Conducting regular check-ups and tests is of the essence when it comes to keeping your brakes working in top shape.

3. Battery

The battery is required for the motorcycle to operate the electric parts mentioned below:

  • Headlamp (should work while running and idling)
  • Taillamp
  • Horn
  • Stoplight
  • Turn signals
  • Speedometer
  • License plate light

Although a battery may not be required for the headlamp to work, the latter may still not function properly when the bike is idling. That means the light will dull down when the motorbike is not in motion, which reduces road presence if you’re stopped at the side of the road.

4. Taillight

A taillight is crucial to your safety and the safety of others on the road. Having a taillight with a brake light is a legal requirement in every state in the US. A taillight helps with road presence. It lets the motorists and drivers behind you know when you’re applying the brakes. 

The brake light on your motorcycle needs to be engaged every time you apply the front or rear brakes. This illuminates the brake light and indicates that you’re slowing down, keeping you from being rear-ended. In some states, your taillight is required to be red.

5. License Plate Bracket & Light

A license plate bracket is necessary for the display of your license plate. If you purchase a good license bracket, it should also come equipped with a license plate light. The reason for having this on your bike is simple – law enforcement authorities need to know if there is a license plate attached to the bike at night. Without this light, it wouldn’t be visible.  Check with the local Department of Motor Vehicles to be sure you know that your tag is properly displayed and lit on your motorcycle and in compliance with all laws.

Every state might have a different specification for the color of the light. Still, from personal experience, I can say that white lights do the job perfectly. 

6. Horn

Having a horn or a warning device is vital for on-road use. It is required by every state in the US, and for a good reason. Having a horn lets other motorists and drivers on the road know your intentions. Additionally, it helps catch the attention of drivers who might not be paying attention on the road and swaying towards you. 

Some states might require you to have an electric horn, while others may just need the presence of one regardless of its type. Ensure that you check your local government’s requirements. However, it’s usually best to get an electric horn to avoid any complications later. 

7. Mirrors

Different states will require you to have either only one or both rear-view mirrors. The mirrors are installed to let the rider inspect the traffic behind them before switching lanes or making turns. 

This avoids unnecessary accidents and keeps motorcycle riders safe on the road. It also helps spot a motorist approaching your motorcycle at high speeds and gives you a chance to get out of their way. 

In Washington, you can ride a motorcycle without rear-view mirrors if it was manufactured more than twenty-five years ago, given that it has probably been restored to its original condition and is being ridden to and from a motorcycle show or contest. Additionally, no mirrors are required for motorcycles manufactured before January 1st, 1931. 

8. Turn Signals

This is a vital component that a motorcycle needs to have. The reason for this is that it helps others see you clearly, especially at night. The bright yellow light is also useful when riding around in the fog. It helps maintain your road presence. 

Many states do not require the installation of turn signals. They only require motorcycle riders to let their turning intentions be known to others on the road through the use of hand signals. On the other hand, some states do not allow motorcycles without turn signals to be ridden at night. For instance, in the state of Oregon, motorcycles manufactured before 1973 do not need to have turn signals. However, they are not allowed to be ridden at night. 

If you ask me, I recommend having turn signal blinkers on your motorcycle, because hand signals require you to let go of the handlebar, which might result in losing control. However, depending on state laws, you can use hand signals if you cannot afford electric turn signals. 

9. Tires

Tires are a vital part of the motorcycle or any vehicle, for that matter. Suppose you plan to buy a dirt bike and turn it into a street-legal motorcycle. In that case, you need to ensure that you have DOT (department of transportation) approved road tires installed on it. 

Even if the bike you plan on buying isn’t a dirt bike, you should still ensure that the bike tires are DOT-approved. You can find a stamp on the tires that signifies DOT approval. Certain types of tires are not designed to be used on the road at high speeds and can result in an accident, so be mindful of your own safety. 

Furthermore, you need to ensure that the tires are in good condition by following the tips below:

  • The tire should not have a break in it.
  • It should not have any bumps, bulges, or cord exposure.
  • The tire’s surface should not be worn out in any way that would affect the motorcycle’s traction or stopping ability. 
  • It should have sufficient tread depth. It shouldn’t be less than 2/32 of an inch for New York.

10. Muffler

The muffler is used with the exhaust system to dampen the engine’s sound. In some states, it is illegal to have loud pipes, also known as straight pipes, that have the internal baffles removed. In short, your bike shouldn’t produce a louder sound than the default factory sound. 

11. Reflectors

These devices are designed to work without electric input. As the name suggests, they typically reflect the light from external sources and let people know there is something in the way. The requirements for reflectors will vary according to your state. 

Typically, I have seen one red reflector on the rear of the motorcycle, which can also be a part of the taillamp. One white reflector on the license plate is also required by some states. In California, you are required to have yellow or white reflectors installed on the front center of the motorcycle. 

12. Speedometer

A speedometer is required on a motorcycle so the rider can adhere to the speed limits on the road. It also provides additional information on the number of revolutions per minute (RPM), fuel left in the tank, engine temperature, and speed in miles per hour. 

Suppose you’re converting a dirt bike into a street-legal motorcycle. In that case, Indiana is the only state requiring a speedometer. However, my personal opinion is to get one regardless of the requirements in your state since it will come in handy when you need to gauge your speed. 

13. Inspection Certificate

In most cases, you wouldn’t have to physically check all of the above parts on a motorcycle if the owner can produce an inspection certificate. This certification is a type of safety check performed by the local governing authority. It ensures that all necessary parts required for street legality are attached to the motorcycle. 

This document comes in handy when you’re stopped by the cops and ensures the vehicle’s safety on the road. I recommend everyone gets an inspection certificate for their motorbike after making it street legal. 

14. Fenders

In some states, it may be a requirement to have front and back fenders or splash guards to prevent the splashing of water, mud, and rocks to the vehicles behind you on the road. Even if this isn’t a requirement in your state, having them installed is a clever idea since it translates into good road manners. 

Can you recall the last time you drove down the road and the person ahead did not have splash guards installed? How did it make you feel when a continuous stream of muddy water kept hitting your windshield? 

15. Registration & Insurance

Lastly, you must have a valid registration and insurance for your motorcycle to be street legal. I know this sounds a bit obvious, but I wanted to make this article as comprehensive as possible and make sure that nothing falls through the cracks. 

If you purchase a second-hand motorbike, the registration should be the first thing you check, followed by the inspection report. Once that is out of the way, you should look and physically check all the above-mentioned parts. 


How To Know If a Bike Is Street Legal? There you have it, folks, everything you need to know on how you can spot a street-legal motorcycle. I recommend reviewing your specific state laws before making a purchase or taking on a project to turn a bike into a street-legal vehicle. 

If you aren’t sure about anything or are having trouble finding information online, visit your local DOT authority. They’ll be more than happy to help you. I’ve tried my best to make this article as applicable as possible to all states, but there might always be specific requirements in your area that you should be aware of.

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About the Author:

Michael Parrotte started his career in the motorcycle industry by importing AGV Helmets into the North American market. He was then appointed the Vice President of AGV Helmets America. In total, he worked with AGV Helmets for 25 years. He has also served as a consultant for KBC Helmets, Vemar Helmets, Suomy Helmets, Marushin Helmets, KYT Helmets, and Sparx Helmets.

In 1985, he founded AGV Sports Group, Inc. with AGV Helmets in Valenza, Italy. For over 38 years now, the company has quietly delivered some of the best protective gear for motorcyclists in the world.

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