Young drivers aged under 20 are overrepresented in serious motor vehicle accidents. They account for 15% of crashes resulting in death or injury despite representing only 5% of license holders. Young drivers are more at risk due to lack of experience, poor hazard perception, a desire to prove themselves, and a feeling of invincibility. They are also more likely to speed, drive while fatigued or intoxicated, and have crashes at night or with passengers. Both modifiable risk factors like speeding and non-modifiable factors like age and gender contribute to the high risk for young drivers.