I am also someone who is conditioned to fall asleep when I ride a bus
however, that only applies when the bus is moving
here's a little story
So several times, I took a 4 hour bus ride to the next city,
the bus leaves around 6am and arrives around 10am,
then one time I had to arrive at my destination before 9 am,
there is only a night bus scheduled to leave at 11pm and arrive around 7am
I thought it was strange, it was twice as long as the morning bus
It turned out that the bus stopped for 3 hours at a rest area to let the driver and passengers sleep
and I just sat there for 3 hours because I can't sleep on the bus if the bus isn't moving