One Way Left Arrow Sign Material:Engineer Grade Prismatic 25+ or a thinner gauge aluminum

or a thinner gauge aluminum (

please be sure to replace any older

they must yield to oncoming traffic before turning

Size: 24x18

Use this sign in the right hand traffic lane to make sure that drivers know that they can only turn right

One Way Left Arrow Sign Material:Engineer Grade Prismatic 25+ or a thinner gauge aluminumSizes Available: 18x24, 24x30 We make all our signs from . 080 thick aluminum. Other companies use steel which rusts, plastic which cracks or warps, or a thinner gauge aluminum (. 060 or . 040) which bends or buckles. Material Details We use 3M reflective sheeting and 3M UV resistant inks. 3M offers the following on their sheeting: 3M 3400 Series Engineer Grade Prismatic (EGP): Rated for 5 7 year outdoor lifespan 3M 3930 Series High Intensity