Subd. 1. Distribution of five percent.

Pursuant to article 14, section 5, of the constitution, five percent of the net highway user tax distribution fund is set aside, and apportioned as follows:

1. (1) 28 percent to the trunk highway fund;
2. (2) 64 percent to a separate account in the county state-aid highway fund to be known as the county turnback account, which account in the state treasury is hereby created;
3. (3) 8 percent to a separate account in the municipal state-aid street fund to be known as the municipal turnback account, which account in the state treasury is hereby created.

Subd. 2. Investment.

Upon the request of the commissioner, money in the highway user tax distribution fund shall be invested by the state board of investment in those securities authorized for that purpose in section 11A.21. All interest and profits from the investments must be credited to the highway user tax distribution fund. The state treasurer shall be the custodian of all securities purchased under this section.