Signals and signs both give important instructions, but it can be confusing whether light‑based signals or fixed signs take precedence. In this guide you learn when to follow traffic signals, when to follow traffic signs, and how to interpret them correctly under Norwegian rules.
For a complete guide to lights and signalling, see Use of lights and signals. For a full overview of traffic signs and road markings, see Traffic signs and road markings.
Difference between signals and signs
| Type | Definition | Example | Typically used |
|---|---|---|---|
| Signal | Dynamic light‑ or sound‑based instruction | Traffic lights, flashing amber, horn | Real‑time control |
| Sign | Fixed, static instruction or warning | Stop, give way, speed limit | Rules over time |
When are traffic signals used?
Signals control the flow with light and sound where real‑time regulation is needed:
- Traffic lights at junctions and crossings
- Flashing amber for temporary hazards or signal fault
- Hazard lights and horn for acute danger
- Lane control signals over the carriageway. See Traffic system (lights).
When are traffic signs used?
Signs provide lasting rules, requirements or prohibitions:
- Stop sign (full stop)
- Give‑way sign (yield to cross traffic)
- Speed limit signs (maximum speed)
- Zone signs for speed or parking apply until cancelled. See Speed limits.
Priority order when in conflict
When several control measures are present, follow this order:
- Police and traffic controllers
- Light and sound signals
- Traffic signs
- Road markings
- General traffic rules
If a junction shows red, you must stop even if signs and markings might appear to allow the movement. With flashing amber, follow signs and rules with extra caution.
Typical conflict scenarios
| Situation | Follow | What to do |
|---|---|---|
| Red light and priority‑road sign | The signal | Stop at the stop line until green |
| Flashing amber with give‑way line | The sign/markings | Slow down, yield clearly |
| Police directs against a red light | The police | Follow their directions, watch for pedestrians |
| Temporary work‑zone signing and green light | The work‑zone signs/cones | Follow Works warning and temporary signing |
| Red cross over lane but free path ahead | The lane signal | Change lane safely before the gantry |
Rail and level crossings
| Situation | Follow | What to do |
|---|---|---|
| Red flashing at level crossing | The signal | Stop before the crossing. See Level crossings – safe crossing |
| Barrier lowers, green at next junction | Barrier and red flash | Wait until barrier is up and flashing stops |
Practical tips
- Expect flashing amber at low‑traffic times
- Power outage in junctions: treat as unregulated junctions and apply normal give‑way
- In tunnels: follow lane signals; see Driving in tunnels
Common misconceptions
- “Green arrow in the lane means I can ignore red in the junction” – False. Lane signals govern lane use; red at the junction still means stop. See Traffic system (lights).
- “Flashing amber means I can drive as normal” – It means extra caution. Follow signs and markings with reduced speed.
- “Temporary signs carry less weight than fixed signs” – Temporary work‑zone signing has the same validity. See Works warning and temporary signing.
- “Red flash at rail crossings is only a recommendation” – Red flashing requires a full stop. Read Level crossings – safe crossing.
Key points
- Follow traffic signals when present – they override signs and general rules
- Follow traffic signs when signals are absent or give no instruction
- In conflicts, signals have priority when operating
- Norwegian Public Roads Administration maintains signs; local authorities maintain signal systems
Related articles
- Communication with other road users
- Interaction in traffic
- Roundabouts: give‑way, signalling, single vs double lane, directions
- Works warning and temporary signing
Understanding the difference between dynamic signals and fixed signs makes you a safer and more predictable driver.