[modi15]

Sleeper buses are huge in India. The railways are choked because they are run by the government. For overnight travels outside your city, sleeper buses are the most convenient options for the vast majority of the people - cheaper than flight, and more accesible/cleaner than the train.

There are multiple private operators which provide this service. Personally, I dont have too hard a time sleeping in one. It also offers more privacy than a typical sitting bus or if you are a couple you can book two beds.

There have been a couple of accidents though and people have died. Not too sure if the accident rate is more than normal sitting buses - sleeper buses arent perceived more 'risky' in India as compared to the siting ones.