Sec. 18-53. Limitations on privilege of overtaking and passing.[207]
The driver of a vehicle shall not drive to the left side of 
the center line of a street in overtaking and passing another 
vehicle proceeding in the same direction unless such left side 
is clearly visible and is free of oncoming traffic for a sufficient 
distance ahead to permit such overtaking and passing to be 
made in safety.
No person operating a truck or tractor and trailer shall 
pass or attempt to pass any truck or tractor and trailer going 
in the same direction on an upgrade hill if such passing will 
impede the passage of following traffic. (Code 1959, § 18-53.)