The 'Main Road Number' sign (4.57) is a crucial direction sign in Switzerland, guiding you towards specific route numbers or indicating upcoming route arrangements. It helps you choose the correct lane, destination, or detour well in advance, ensuring smooth navigation. Always interpret this sign alongside lane markings, traffic lights, and any supplementary panels to plan your route safely and calmly, avoiding abrupt maneuvers.
This directional sign helps you navigate Switzerland's main road network by clearly indicating route numbers and destinations. Proper interpretation is crucial for safe lane selection and timely manoeuvres, essential for your theory test revision.
This direction sign is part of Swiss route guidance. It is meant to be read before the decision point so drivers can select a lane, exit, route number, destination, detour, or road category without sudden steering or braking. The safe response is to plan the manoeuvre calmly, confirm that the lane and vehicle category match the sign, and avoid crossing lanes late. Official catalogue code: 4.57.
The "Main road number" sign guides drivers toward main road number or explains the route arrangement ahead. Use it to choose the correct lane, destination, route number, or detour in good time. Catalogue code 4.57.
Get clear, practical answers to the most common questions about the 4.57 - Main road number 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 Swiss driving theory exam in Switzerland.
The Main Road Number sign (4.57) serves to inform drivers about route numbers or upcoming route arrangements. Its primary goal is to help you plan your journey and select the correct lane, exit, or destination ahead of time, promoting safer and more organized traffic flow.
Upon seeing the Main Road Number sign, you should read the route information early enough to calmly decide on your intended lane, destination, route number, or detour. Ensure your chosen path aligns with your vehicle category and planned route, and signal your intentions smoothly.
A common trap in the theory test is confusing this sign with general destination signs or not understanding its specific purpose of route number guidance. Learners might also be tested on their ability to react promptly and safely, planning lane changes well in advance rather than abruptly after missing the information.
Yes, the 'Main Road Number' sign's effect can be influenced by its placement and context. You must always interpret it in conjunction with lane markings, traffic lights, road layout, and any supplementary panels that might provide additional instructions or clarify the route arrangement for specific lanes or vehicle types.
It is prohibited to cross lanes abruptly after passing the Main Road Number sign if you realize you missed the relevant information. You should also not follow an arrow or destination that does not match your current lane, your intended route, or your vehicle's category, as indicated by the sign and surrounding context.
A clear reference image of the 4.57 - Main road number road sign used in Switzerland.

The 4.57 - Main road number road sign may also be known by these alternative names or terms.
The 4.57 - Main road number road sign is part of the Swiss Direction Signs category, which groups together signs with similar rules and functions.
Reviewing related road signs side-by-side helps solidify your understanding and reduces confusion for your theory test revision. Use this traffic sign comparison to master recognition and avoid common mistakes in your driving theory study.

Prepare for Town Entry with the 4.27 Direction Sign

Prepare to exit town limits with the 'End of town/village on main road' sign (4.28).

Entry of Town/Village on Minor Road Sign (4.29): Navigate Your Route Ahead

Sign 4.30: Navigating the End of a Town or Village on a Minor Road

Navigating with the Expressway Route Signpost (4.31)

Prepare to choose your lane with the Signpost to Destination via Main Route (4.32).

Navigate your route with the Signpost to destination via minor route sign (4.33).

Follow This Sign: Detour to Your Destination Ahead
After reviewing the full list of Swiss road signs, delve deeper into specific categories, practice recognition with quizzes, or explore detailed explanations for each sign. Continue your comprehensive preparation for the official theory driving test.
View All Swiss Road Signs