One of my pet peeves is when an officer calls in a traffic stop after having already stopped the vehicle. I have never understood why these types don't understand that if the stop were to go south, no one would know where they were. Unless the tactical situation demands otherwise, it's imperative that the officer involved in a traffic stop radio the information in before he or she stops the vehicle.
It's a simple transmission employing basic information. It's easy to remember what information you need by thinking in terms of the mnemonic TLC: tag, location, and color (of vehicle). As a general rule, I would also include the number of occupants in the transmission to keep your zone partners aware of what’s going on, especially at night. On the flip side, just because you did call it in doesn't mean that your dispatch center can assume everything is fine and they can wait for you to clear the call before talking with you again. Dispatch needs to check on you periodically and keep your status updated. Patrol and dispatch work hand in hand, and you should never break that partnership for expediency's (or laziness') sake.
Stop Location
A familiar operational principle is to be intimately familiar with your patrol area. You should be aware of traffic patterns, ongoing construction, and where the best lighting is. Having that knowledge is essential so you can choose a good location for your traffic stop.
It’s a given that there will be times when your final stop is forced upon you because of driving conditions or the driver's actions. That being said, if the spot is not tactically sound, or otherwise conducive to a safe stop, there is nothing to hinder you from making adjustments. Don't ever feel you have to accept your current position if you don’t like it. Shy of an exigent circumstance, take your time and make every effort to insert yourself into the best tactical situation you can create. If the driver doesn't cooperate or drives off, then you know you have something bigger going on and you can react accordingly. Check your ego at home before you go on shift so you can make it home after your shift.