Do Not Enter Road Sign: Meaning and Rules
The Do Not Enter sign (MUTCD R5-1) is a square regulatory sign with a red circle and white horizontal bar that prohibits drivers from entering a roadway, lane, or ramp from that direction.
Legal Meaning and Placement Standards (MUTCD R5-1)
The Do Not Enter sign (MUTCD Section 2B.46) is a mandatory regulatory sign. Disobeying this sign is a serious traffic violation because proceeding past it places a vehicle directly into opposing, oncoming traffic.
Under federal standards (MUTCD Section 2B.46), R5-1 signs are installed at points where traffic is prohibited from entering a one-way roadway or highway ramp. Standard installation locations include freeway exit ramps (to prevent wrong-way highway entry), the termination points of one-way streets, and crossovers on divided highways.
MUTCD Section 2B.48 (Wrong-Way Traffic Control at Interchange Ramps) outlines the multi-sign system where Do Not Enter (R5-1) signs are placed at ramp intersections facing entering traffic, supplemented by Wrong Way (R5-1a, Section 2B.47) signs placed farther along the ramp facing drivers who have entered in the wrong direction.
Required Driver Action When Facing a Do Not Enter Sign
- Do not enter the roadway or ramp in the direction indicated by the sign: That approach is not authorized for travel in your direction.
- Follow permitted traffic movements: Do not enter. Follow the permitted traffic controls and use a legal route for your intended direction of travel.
- Never proceed past an R5-1 sign: The Do Not Enter sign enforces a strict legal prohibition against traveling in that direction.
State Driver Handbook Example: Virginia Driver Guidance
In Section 2 of the Virginia Driver’s Manual (Signals, Signs and Pavement Markings), the Virginia DMV pairs Do Not Enter (R5-1) and Wrong Way (R5-1a) when discussing head-on collision risks. For drivers who inadvertently pass these signs, the Virginia manual gives explicit corrective driver guidance: slow down, pull over to the side of the road, and cautiously turn around when safe, rather than continuing against oncoming traffic.
Source: Virginia Department of Motor Vehicles Driver’s Manual (dmv39.pdf), Section 2: Signals, Signs and Pavement MarkingsDo Not Enter vs. Wrong Way: Key Differences
Do Not Enter (R5-1) and Wrong Way (R5-1a) work together as a coordinated, two-stage system to prevent deadly head-on collisions on ramps and divided highways:
Do Not Enter (R5-1, MUTCD Section 2B.46) is a square sign posted at the ramp entrance to PREVENT vehicles from entering. Wrong Way (R5-1a, MUTCD Section 2B.47) is a horizontal rectangular sign placed farther along the ramp facing drivers who have ALREADY made an illegal turn and are traveling in the wrong direction.
Frequently Asked Questions
What shape is a Do Not Enter road sign?
In the United States, the Do Not Enter sign (R5-1) is square. The inner symbol consists of a red circle with a horizontal white bar and white text, but the physical sign panel itself is an equilateral square.
What is the difference between a Do Not Enter sign and a Wrong Way sign?
Do Not Enter (R5-1, MUTCD Section 2B.46) is placed at the entrance of a road or ramp to prevent drivers from entering the wrong way. Wrong Way (R5-1a, MUTCD Section 2B.47) is placed farther down the roadway or ramp to alert drivers who have already entered that they are driving against oncoming traffic.
Where are Do Not Enter signs most commonly placed?
They are installed at freeway exit ramps, at the exit ends of one-way streets, at median crossovers on divided roadways, and at restricted access ramps per MUTCD Sections 2B.46 and 2B.48.
What should a driver do if they realize they passed a Do Not Enter sign?
Never continue driving in the unauthorized direction. State driver handbooks, such as the Virginia DMV manual, advise drivers who inadvertently pass these signs to immediately slow down, pull off the travel lane to the side or shoulder, and cautiously turn around when it is safe to do so.
Official Source Citations
- FHWA MUTCD 11th Edition with Revision 1 (December 2025): Section 2B.46 DO NOT ENTER Sign (R5-1); Section 2B.47 WRONG WAY Sign (R5-1a); Section 2B.48 Wrong-Way Traffic Control at Interchange Ramps; Figure 2B-13 (View Federal Source)
- FHWA Standard Highway Signs (2024 Release 3): Drawing R05-01 Do Not Enter (p. 2-190); SVG R05-01 30x30 (View Federal Source)