Questions & Answers about Надеюсь, мы не попадём в пробку по дороге к вокзалу.
Yes. Надеюсь is the 1st person singular form of надеяться (to hope), so the subject я is normally omitted because it is already clear from the verb ending.
- Надеюсь = I hope
- Я надеюсь = also possible, but less necessary unless you want emphasis
Russian often drops subject pronouns when the verb form already shows who is doing the action.