When marijuana is smoked, it can begin to affect the smoker within minutes and effects can last for between two and four hours. When marijuana is eaten, it may take over an hour to begin to affect the consumer, but the effects of the marijuana may last for more than six hours.

Never let someone ride if they have had too much to drink. Do whatever you can to prevent them from riding, including taking their keys, if necessary. Arrange an alternative way for them to get home.

To reduce the risk of a collision when riding at night, be sure to reduce your speed and increase your following distance. Use the headlights of vehicles ahead of you to see farther down the road. You should always be flexible about your lane position, especially when riding at night.

Because distances are more difficult to judge in the dark than in daylight, be sure to reduce your speed and increase your following distance when riding at night. Use your high beam any time you are not meeting or following another vehicle.

When hazards exist to your left, it is often best to ride in the right portion of the lane. Be prepared to adjust your lane position as road and traffic conditions change.

Oregon law applies severe mandatory penalties for drinking and riding. It is both illegal and dangerous to operate a motor vehicle while under the influence of alcohol.

Stay well behind the vehicle in front of you, even if you are both stopped. The vehicle could back up unexpectedly, or you may need space to get out of the way of another vehicle bearing down on you from behind.

If you are in the middle portion of your lane, you will have the greatest room for error if your control is disrupted by a wind blast from a passing vehicle.

A linked braking system connects the front and rear brakes on a motorcycle. This system applies braking pressure to both brakes when either the front or rear lever is used. Check your owner's manual for a detailed explanation of the braking system on your motorcycle.

Unlike drivers of larger vehicles, a motorcyclist has three lane position options in their travel lane. The rider should select whichever position is safest based on road and traffic conditions.

When riding, sit so that you can use your arms to control the motorcycle rather than to hold yourself up. Your arms should be slightly bent when you hold the handgrips. To help maintain your balance, keep your knees against the gas tank and your feet firmly on the footrests.

Motorcyclists often slow down by simply downshifting. Motorcyclists should be aware that slowing down in this manner does not activate the brake lights.

You should never take eye contact as a guarantee that a driver will properly yield to you. It is not uncommon for drivers to look directly at a motorcyclist but fail to register that they are there.

To discourage automobile drivers from trying to share your lane, ride in the center portion of the lane.

In Oregon, it is illegal for motorcycles and mopeds to pass between two moving vehicles on a multilane highway or one-way street.

To stop quickly, apply both brakes at the same time. Apply the brakes firmly and do not panic if the brakes lock.

Riding directly alongside another vehicle is dangerous because it may place you in the driver's blind spot. Additionally, the vehicle will block your path of escape.

When riding, you should wear sturdy footwear that is high enough to cover and support your ankles. Short-heeled footwear is best because taller heels may catch on rough surfaces. Laces should be tucked in so that they can't be caught on anything.

Leather jackets and pants provide the greatest level of protection when riding.

You can make yourself easier to see by wearing brightly-colored, reflective clothing. Ride with your headlight on at all times and use your turn signals and brake light appropriately.

When parking a motorcycle next to a curb, you should create at a 90-degree angle with the curb by touching your rear wheel to the curb.

When riding at night, travel at a slower speed than you would during the day under similar weather and traffic conditions. It can be difficult to see potential hazards in the dark, so slowing down can increase your chances of avoiding any hazards.

In a group, less experienced riders should ride toward the front, just behind the leader, so more experienced riders can easily watch them.

To be sure you are familiar with the specific type of motorcycle that you are planning to ride, read the owner's manual before riding it for the first time. This is particularly important if you are riding a borrowed motorcycle.

Use both brakes every time you slow or stop, regardless of the condition of the road.