Given a travel related situation, and given a specific question about the situation, summarize the question into a title

Ex Input:
In a few days, I will be traveling alone from London Heathrow to King's Cross station at about 1am via night bus. I have read a lot of conflicting information on the safety of night buses, and I have begun to alarm myself.

Is lugging a rather large suit case across most of London at 1 in the morning going to be a safety concern (i.e. is it worth shelling out a rather large sum of money for a taxi?), or should I be fine?

Is there anything I should know or avoid doing?

Ex Output:
London night bus safety

Ex Input:
I have been invited to a conference in USA. I am going to apply for a B1 visa. Unfortunately the invitation letter doesn't have a signature on it. Only the email id and the website is there. Would the letter be valid in this case?

Ex Output:
Is a signature mandatory for a B1 visa invitation letter?

Ex Input:
I'm in Texas, USA and I'm traveling to a different city where I'm going to be driving a friend's car for a few days. I hold a valid drivers license but no car insurance of my own.

Am I required to have insurance? My friend has his.
If yes, which companies offer one?

I looked at Geico and Nationwide but they don't seem to offer temporary insurance.

Thanks.

Ex Output:
Do I need a temporary car insurance and how to get one?