42. The expressions listed below are defined or otherwise fall to be construed for the purposes of this Part in accordance with the provisions indicated—
| concession agreement | Article 23(1) |
| concessionaire | Articles 23(1) and 27(1) |
| designation order | Article 15(1) |
| extension toll order | Article 34(1) |
| road subject to a concession | Article 23(2) |
| toll order | Article 28(1) |
| toll period | Article 29(1) |