Young people aged **15 to 29** are the group at the highest risk of traffic accidents in Spain. These accidents are the **leading cause of death** in this age group.

- Accidents mainly occur in **large cities** and on routes to work or party venues, especially during **summer, Christmas, and weekends**. The most dangerous times are at **night and early morning**.

- The main causes include **speeding**, consumption of **alcohol and drugs**, and **lack of driving experience**. Additionally, young people tend to **disregard traffic rules** and **take unnecessary risks**.


- Competition with other drivers and the lack of use of **seat belts or helmets** also play a role. Advertising that encourages risk-taking can worsen this situation.


For these reasons, young people are the group most affected by traffic accidents, confirming that the correct answer is that traffic accidents are one of the main causes of mortality among **young people aged 15 to 29**.