Only nights. I can park easily everyday at any stop of my choosing, traffic is a breeze. After 4 years of it, daytime driving would kill...
Take the truck to a terminal. DO NOT ABANDON TRUCK if at all possible! Try and get back to home terminal asap. Then sure, leave keys in ignition...
Drive all night. Traffic is non-exsistent for me. Unless someone does something really dumb, or a rare construction closure.
Its the nature of the profession. Its tough initially, but you get used to it. If you're not driven (no pun intended) to work as much as possible...