The 'Straight Ahead Only' sign (402.3) is a mandatory traffic sign that dictates a specific path or direction you must follow. It's often used at islands, central refuges, or one-way systems to ensure traffic flows safely and orderly. You must adhere to the direction shown, often in conjunction with lane markings or road layout, and not attempt to deviate.
This essential traffic sign dictates a compulsory direction, ensuring orderly flow and safety on Icelandic roads. Proper interpretation is crucial for your theory test revision and safe driving practice, preventing conflicts with other road users.
Straight Ahead Only is a mandatory sign used where traffic has to move in a particular way to stay safe and orderly. It often appears at islands, central refuges, one-way arrangements, path networks, and places where separating traffic streams matters more than driver preference. The sign should be read together with arrows, lane markings, kerbs, and the physical road layout because those details show exactly how the instruction is applied on site. Ignoring a mandatory sign can place you into direct conflict with opposing traffic, pedestrians, cyclists, or a protected part of the road space.
This sign makes straight ahead only compulsory for the road user or lane concerned. You must follow the direction, side, or path shown instead of choosing your own line through the location.
Get clear, practical answers to the most common questions about the 402.3 - Straight Ahead Only road sign. Learn how the sign works, what rules it represents, and how it affects real driving situations. This FAQ strengthens your understanding and supports accurate decision making for the Icelandic driving theory exam in Iceland.
This mandatory sign means you must proceed straight ahead and cannot turn in any other direction. It ensures you follow the designated path or lane, which is crucial for maintaining safe and orderly traffic flow, especially around obstructions or traffic separation points.
You are prohibited from choosing any direction other than straight ahead, driving on the wrong side of an island or refuge, entering a reserved path, or attempting to swerve into another lane late to correct a missed mandatory movement. Essentially, you must follow the route indicated.
A common trap is thinking you can improvise if the road looks wide enough. The 'Straight Ahead Only' sign is mandatory; it overrides your assumption about available space. Another mistake is not paying attention to lane markings or the physical road layout, which often clarify exactly how to follow the straight-ahead instruction.
You must position your vehicle early for the straight-ahead movement. Follow the side, path, or lane indicated by the symbol and any accompanying markings or islands. Ensure your speed is appropriate to carry out the manoeuvre smoothly and safely, using mirrors and signals if changing lanes as part of the instruction.
No, the 'Straight Ahead Only' sign is a clear instruction that you must continue straight. If there are any optional turns or exits, they will be clearly marked by other signs, and this sign specifically overrides any other directional choice by making the straight path compulsory.
A clear reference image of the 402.3 - Straight Ahead Only road sign used in Iceland.
The 402.3 - Straight Ahead Only road sign may also be known by these alternative names or terms.
The 402.3 - Straight Ahead Only road sign is part of the Mandatory Direction Signs category, which groups together signs with similar rules and functions.
Studying closely related road signs side-by-side is crucial for improving sign recognition and reducing errors in your driving theory test revision. This targeted comparison of similar traffic signs helps reinforce your understanding of their distinct meanings and applications.
You MUST turn left when you see this compulsory direction sign.
Understand the 'Turn Right Only' Mandatory Direction Sign (402.4)
Mandatory Turn Left Ahead Only Traffic Sign Explained
Mandatory Movement: Follow the Arrow or Go Straight Ahead!
Mandatory Traffic Direction: Straight Ahead or Turn Left
Understand the Mandatory 'Pass Either Side' Traffic Sign (402.8)
Understand the 'Pass Obstruction on the Right' Mandatory Traffic Sign
After reviewing the full list of Icelandic road signs, reinforce your learning with targeted practice. Explore our sign group categories or take a specific quiz to test your recognition and recall. Ensure you're fully prepared to identify and interpret all traffic signs for your upcoming driving theory exam.
View All Icelandic Road Signs
