I don't usually feel sleepy driving, even with my cab no radio.
Guess use to it, drive without radio at slow speeds during army
time.
But there was once my eyes super sleepy, but i counter that by
taking a 15min power nap.
I see some drivers take naps too long, you guys should read
this:
http://www.wikihow.com/Power-Nap
I always take power nap, and the coffee before nap really works,
but for taxi driving only did once at Bus stop Upp Thomson Road
towards Sembawang just before SLE.
I always put 20min timer cos i know it roughly takes me 5min to
sleep,
The statements below really true for Power Nap
Sleeping for any longer than 20 minutes will be counterproductive.
Sleeping more than 30 minutes can lead to sleep inertia, making you
feel sluggish and more tired than ever.
If you want to drive 24hrs, like one Graduate Driver, also can.
Do like what the famous scientist Thomas Edison did, every one hour
awake take 15 min nap. Sounds exterme but thats roughly 6hours
worth of nap a day actually