Unfortunately, Citi Platinum Select travel insurance benefits were cut in September 2019, along with a slew of benefit cuts to other Citi cards. This card no longer has rental car insurance, trip cancellation and delay insurance, travel accident insurance, lost baggage and baggage delay protection, roadside dispatch, or travel & emergency assistance. It still has extended warranty coverage and damage/theft purchase protection, though.
If you're in the market for a good travel credit card that does offer some of these benefits, consider the Capital One Venture card. It offers secondary rental car insurance, roadside dispatch, travel accident insurance, travel and emergency assistance, lost baggage reimbursement, and more. Plus, it gives 2 miles / $1 spent, and an initial bonus of 50,000 miles after spending $3,000 in 3 months. The annual fee is $95, but it's waived the first year.