Guide signs
Exit Number sign
Gives the exit a number that usually matches the nearest mile marker rather than a simple running count from one end of the highway.
- Wide rectangle
- Green
- MUTCD E1-5P
How to recognize it
Shape and background first
ShapeWide rectanglea wide rectangle
BackgroundGreengreen, used only for directions and distances
FamilyGuide signsFederal designation E1-5P in the MUTCD.
Federal designation E1-5P in the MUTCD, the national standard every state signs to. Mounted in the upper corner of the main green exit sign, or as its own small marker on the shoulder just before the ramp.
What the MUTCD specifies
Designation: E1-5P
MUTCD Section 2E.23
Source: Federal Highway Administration, MUTCD 11th Edition (December 2023), Part 2, Table 2E-1, verified 2026-09-26.
On the test
What the test wants you to know
The mistake people make
New drivers often expect exits to run 1, 2, 3 in order. On most interstates the number is the mile marker at that exit, which is why exit 24 can be followed by exit 31 with no exits 25 through 30 ever having existed.
Same family
