The adhesive and digital vignettes on Austria's highways are checked through a combination of physical inspections by authorities and automated electronic systems. Authorities conduct spot checks and patrols to ensure that vehicles have valid vignettes displayed. Additionally, there are electronic tolling systems in place that can automatically detect vehicles without valid vignettes as they pass through tolling points. This multi-faceted approach helps to ensure compliance with the vignette requirements on Austria's highways. **

Vignettes for Austria can be purchased at gas stations, post offices, online, and at some border crossings. They are required for using the Austrian autobahn and expressway network. Vignettes are available in different durations, such as 10 days, 2 months, or 1 year, and must be displayed on the windshield of the vehicle. **

If you are driving in Europe, you may need to purchase tolls and vignettes for certain countries. For example, in France, you will need to pay tolls on major highways, so it is recommended to buy a toll tag or use a credit card for payment. In Switzerland, you will need to purchase a vignette for driving on highways, which can be bought at gas stations, post offices, or online. It is important to research the specific requirements for each country you will be driving through and purchase the necessary tolls and vignettes in advance to avoid any fines or penalties. **

No, two 10-day vignettes for Austria cannot be used simultaneously. Each vignette is valid for a specific period of time and can only be used for that duration. If you need to use the vignette for more than 10 days, you would need to purchase a new one once the current one expires. **

You can buy vignettes at border crossings, gas stations, post offices, and online. The number of vignettes you need depends on the country you are traveling in and the duration of your stay. For example, in Switzerland, you need to purchase a vignette for driving on highways, and it is valid for one calendar year. In Austria, you need to purchase a vignette for driving on highways, and it is available in 10-day, 2-month, and 1-year options. It's important to check the specific requirements for each country you plan to visit. **

In addition to ADAC, you can also purchase tolls or vignettes for Austria at gas stations, post offices, and some border crossings in Germany. Many gas stations along the border with Austria will sell the vignettes, and some larger post offices may also have them available for purchase. It's always a good idea to check with the specific gas station or post office beforehand to ensure they have the vignettes in stock. **

No, it is not allowed to only broadcast the sound during live football streaming without the picture. Broadcasting the sound without the picture would not provide the full experience of the game and would not meet the expectations of the viewers. Additionally, broadcasting the sound without the picture could potentially violate copyright laws and licensing agreements. Therefore, it is important to ensure that both the sound and picture are broadcasted together during live football streaming. **

To broadcast a live video instead of the webcam in Skype, you can use a third-party software or hardware device that allows you to input a live video feed into your computer. One option is to use a video capture card or device that connects to your camera or video source and then to your computer. You can then select this device as the video input source in Skype settings. Another option is to use streaming software that allows you to broadcast a live video feed from a camera or other source directly to Skype. Make sure to test your setup before your call to ensure everything is working properly. **