Ask, can't hurt.
Side note: We often work late nights at my work and are allowed to expense a cab ride home if working later than 10pm (most people take the el and walk, I think it is for safety that late plus you often have to wait a long time past 10pm on CTA). So, if I work late as I do and ride home, should I not get some sort of bonus? I've been saving the company plenty of money the last couple of years by riding and could use some new lights for riding at night, just saying.