Dark night scene, so it is not certain.
It's vertical twin but cylinder seems shorter than 650cc, and seems single carburator.
I'll say Triumph Tiger100.
The only way to be exactly certain of the year is to see the colour of the tank. I don't think we can see enough of this bike to be certain if it is a 350 T90 or a 500 T100 - they are the same size bike. The 'eyebrow' tank badge suggests no earlier than 1966. The T90 finished in 1968. The tank appears to be one colour so I think it is 1969 which makes it a T100.