Keep Left Symbol Sign, MUTCD R4-8 Material:Diamond Grade 25+ If your highways have speed

If your highways have speed limits of 75 mph

Even if you have private property

tap on the window and tell them to slow down

Other companies use steel which rusts

please be sure to replace any older

Keep Left Symbol Sign, MUTCD R4-8 Material:Diamond Grade 25+ If your highways have speedThe Keep Left Symbol is used when the traffic pattern needs to go around an island or median to the left of the median. Size: 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