Cheating death and fighting communism: that is how a fellow officer once described our job.  It was meant to be funny, but as time went on it seemed all too true.
I spent more than ten years in law enforcement, all of it on the street in uniform patrol.  I've been a patrol officer, instructor, sergeant and lieutenant. 
Do not report crimes here. Nothing here should be considered legal advice. All opinions are my own.
If I understand the question correctly (entered on green, waited for traffic to clear to complete the turn, light turned red and then you cleared the intersection) - no. But then, laws vary from place to place.
                             Its possible, but how valuable is that information to the officers?  Not terribly valuable probably.  The cops either know the names already, or have no way of knowing if the subject being arrested is giving them good info.
A more likely scenario would be the subject provides the officers with very detailed information on the dealers and is given a court date for some time in the future in exchange.  Then the officers can determine if the information is good.  If so, the officers can appear in court an explain to the judge that the subject was cooperative in an investigation and request favorable treatment of the informant. 
                          
In my state, the crimes you have described could result in multiple years in prison plus fines and resitution. I do not know the laws of your country, but I'm sure it is equally serious. I strongly suggest contacting a criminal defense attorney.
Depends on the state. Sounds like you should get one.
Audiologist
 Are earbuds dangerous for my ears?
Are earbuds dangerous for my ears? 
                                        
                                        
                                             Private Detective
Investment Banker
 What's a 100-hour work week like?
What's a 100-hour work week like? 
                                        
                              
                             If the officer is acting as a police officer and provided his or her name (Officer Smith or whatever) and that the department he or she works for, that may be all of the information he or she is obligated to provide.  A specific zone, precinct, or other information may not be required.
If the officer is acting as an employee of the property owner, and not as a representative of the city/county/whatever, he or she may not even need to provide that. 
                          
                             If an investigation was conducted, it sounds like a lack of probable cause existed.  Probable cause is a legal burden that a law enforcement agency must meet before arresting someone.
Just because a parent hits a child does not mean the child is being abused.  Reasonable corporal punishment is legal in many cases.  
Strangulation is not likely to be considered reasonable.  If you witness violence, you should call the local law enforcement agency.
Even if the state was to remove him from the house, it is exceptionally unlikely he would be allowed to live with you. 
                          
                             Patrol officers are assigned to zones or beats.  These are specific geographic areas that the officer is responsible for.  A non-emergency call in that zone will be held for the zone officer to handle.  Emergency calls will typically fall to the officer assigned to that zone, or if he/she is unavailable, the next closest unit.  
Certain calls may be held for certain officers.  For example, a department with officers who receive specialized training in dealing with the mentally ill may dispatch one of those officers outside of his or her zone to handle an incident that involves someone who is mentally ill.   
                          
-OR-
 Login with Facebook
Login with Facebook (max 20 characters - letters, numbers, and underscores only. Note that your username is private, and you have the option to choose an alias when asking questions or hosting a Q&A.)
(A valid e-mail address is required. Your e-mail will not be shared with anyone.)
(min 5 characters)
By checking this box, you acknowledge that you have read and agree to Jobstr.com’s Terms and Privacy Policy.
-OR-
 Register with Facebook
Register with Facebook(Don't worry: you'll be able to choose an alias when asking questions or hosting a Q&A.)