Blind pedestrians are around
Never
Yes, it is illegal to use a handheld cell phone while driving in Tennessee. Drivers are prohibited from holding a cellphone or other electronic device to conduct voice communication. Hands-free devices are allowed.
You would need to check local legislation. Different countries and states have differing regulations concerning the use of a vehicle horn.
Whenever someone is not paying attention while driving. If they are stopped at a green light or about to cause an accident, you should use your horn to tell them to stop what they are doing and pay attention. You should not use your horn to try and get the attention of someone outside of your vehicle. This can cause confusion and drivers around you to think that they are doing something wrong.
Never.
No, using a cellphone while driving is generally not allowed, regardless of traffic conditions. Most jurisdictions have laws prohibiting the use of handheld devices while driving to ensure the safety of all road users. Even without oncoming traffic, distractions can impair a driver's ability to react promptly to unexpected situations. It's always best to pull over safely if you need to use your phone.
You are indeed allowed to. As long as you're not text messaging or holding your phone up to your ear, you're okay in many states.
Yes. Police should be allowed to use their mobiles. There is also the concept of the Defence of Duress or Defence of Circumstance, meaning they needed to break a law in order to protect life or prevent a more serious offence. They are allowed to use mobiles for policing only
No one should use cell phones while driving. Cell phone use while driving has been shown to cause as many accidents as drunk driving, even when hands-free devices are used. Texting while driving is even worse.
signaling your intentions
Not very different from texting while driving. If it isn't it should be.
no i do not and you are welcome