Can a passenger in a For-hire vehicle drink alcohol

No - unless it is a limousine with a special permit. A taxi is not such.

Can someone be charged with transportation and sales of narcotics if no drugs were found

It would appear that the police have other evidence to substantiate their charges.

Infractions such as speeding usually do not violate probation - but in your case it might be different if court finds out. You still face DMV...

If your license is suspended an the fines has went to collection's. Is there a way to make payments an get the hold taken off?

You have to pay collections. There is talk of an amnesty program to deal with situations as yours.

How do I go to court if I missed a court appearance

Failures to appear have become nightmares in LA County courts. You can get a date in the future- but your license may be suspended. Get an attorney!

Get an attorney for the trial de novo !

DUI conviction following trial - court never sent abstract to DMV so license is valid...can I still legally drive?

My colleagues are correct. Check the docket with the court.

Run red light by lost at Inglewood CA..

Google "red light photo tickets " Los Angeles County. Ignore it in all ways. They are not now being sent to dmv . You will get vector letters ....

If I have 2 DUI convictions from 08 and 09. will I have to get a sr22 to get my license reinstated?

Yes for the dmv you will need to get SR 22 insurance .

You have to get matter on calendar. Bring letter indicating your Lic ended may be suspended and proof of correction.