Road Sign Hierarchy
Hierarchy of Road Signs in Portugal
Understanding the precedence of traffic signals according to Portuguese Highway Code
Hierarchy pyramid
Click on each level of the pyramid to see detailed information
The higher levels take precedence over lower levels in case of conflicting signals.
Hierarchy of Road Signs and Conflict Situations
When different road signals or rules seem to contradict each other, drivers must obey them in the order of precedence defined by the Portuguese Highway Code (Código da Estrada).
General Principle
Whenever two or more indications conflict, the higher authority in the hierarchy prevails. The correct order is:
- Orders from traffic regulators (police, GNR, or authorised controllers)
- Temporary signs altering normal traffic rules
- Variable message or electronic signs
- Illuminated signs / traffic lights
- Vertical signs (regulatory, warning, or information)
- Road markings (lines, arrows, words)
- General traffic rules (priority, speed, etc.)
Traffic Regulators vs All Other Signals
A traffic officer's gesture or whistle overrides every other sign, signal, or rule.
Example: The traffic light shows 🟢 green, but the officer raises a hand ✋ facing you — you must stop immediately, even though the light permits you to go.
Temporary Signs vs Permanent Signs
Temporary roadwork or detour signs override any permanent vertical or road markings while active.
Example: A permanent arrow ➡️ allows going straight, but a temporary yellow sign shows a detour ⤴️ to the right — follow the detour.
Variable Message Signs vs Traffic Lights or Vertical Signs
Dynamic electronic panels can override lights or static signs when they give immediate instructions.
Example: The light is 🟢 green, but the motorway sign above flashes "🚫 LANE CLOSED" — do not use that lane, even if the light allows it.
Traffic Lights vs Vertical Signs
Traffic light signals take precedence over fixed vertical signs when both are visible.
Example: A "STOP" sign 🛑 is present, but the traffic light shows 🟢 green — you may proceed carefully. The light overrides the sign while operating.
If the light stops working (⚫ off), revert to the "STOP" sign or general priority rules.
Vertical Signs vs Road Markings
Vertical (upright) signs prevail over any conflicting markings painted on the road surface.
Example: The road marking shows a left-turn arrow ↰, but a vertical sign displays "🚫 No Left Turn" — you must not turn left.
Road Markings vs General Traffic Rules
When a road marking modifies the general driving rule, the marking takes precedence as long as it is clear and valid.
Example: At an intersection without signs, the general rule gives priority to the vehicle coming from your right ➡️. But if a "Give Way" triangle 🔻 is painted on your lane, you must yield to the vehicle on your left ⬅️ because the marking overrides the general rule.
Final Summary
In every conflict, follow the chain of priority:
Traffic regulator ➜ Temporary signs ➜ Variable messages ➜ Traffic lights ➜ Vertical signs ➜ Road markings ➜ General rules
This hierarchy ensures consistent and safe driving decisions, even in complex road situations.