From TXDOT News Release
GARDENDALE — Campaign signs are cropping up around the community of Gardendale urging residents to vote one way or another on incorporation.
And at least some of the signs are breaking state law.
Placing campaign signs on public land is illegal. In fact, it is illegal to place any signs on or within the Texas Department of Transportation's right of way. This includes posting signs on trees, telephone poles, traffic signs and other objects in the right of way.
Campaign signs along Texas roads can be placed on private property with the owner's permission. State roads in the Gardendale area include Highway 158, FM 554 (Hollyhock Avenue), FM 1778 and Highway 385.
Signs placed on private property must be made of lightweight material and be no larger than 50 square feet.
Campaign signs may be posted on private property as early as 90 days before an election (no earlier) and must be removed within 10 days after the election.