(a) Right Turns Prohibited. No operator of any vehicle proceeding in the direction indicated in this section on any of the streets named below shall turn his vehicle to the right at the intersection specified opposite such first named street:
*Adopted and reserved for future use.
(b) Left Turns Prohibited. No operator of any vehicle proceeding in the direction indicated in this section on any of the streets named below shall turn his vehicle to the left at the intersection specified opposite such first named street:
*Adopted and reserved for future use.