Ala. Code § 40-12-256
No identification tag for a travel trailer shall be issued until all ad valorem taxes due thereon have been paid. Travel trailers shall be assessed for ad valorem taxation and taxes thereon paid in the same manner that motor vehicles are assessed and ad valorem taxes thereon paid; and the identification tags shall be evidence of such assessment and payment to the same extent that motor vehicle license tags evidence assessment and payment of taxes on motor vehicles. For assessing travel trailers for ad valorem taxation and collecting such taxes the officers performing these duties, respectively, shall be entitled to the same fees and allowances as they are entitled for performing like duties relative to motor vehicles.
Travel trailers shall not be included in any assessment by any person, firm or corporation under the provisions of subdivision (b)(4) of Section 40-11-1, and ad valorem taxation of travel trailers shall be assessed and taxes collected solely as herein provided.
Ala. Code § 40-12-256 (1975)