Continuity mistake: After Johnny and the attendants exit the ambulance with Dora, the pregnant woman, the ambulance is empty and the drug box is on the seat with the Biophone on the floor beside the seat, but in the next shot as the gurney is wheeled inside, the drug box is now on the floor between the Biophone and seat.
Continuity mistake: Before the fake eye test begins Captain Stanley hands each guy their own cheat sheet, and when Chet walks out of the day room upset about the eye test, John puts his cheat sheet into his shirt pocket just as they're being dispatched to the "accident and car fire." After the rescue, when John and Roy get back to the station John joins Chet by the lockers, and when John tries to prove that the eye test was a prank, John opens his locker and pulls out his cheat sheet, even though we saw him place it in his shirt pocket before the run.
Continuity mistake: When Squad 51 and the ambulance arrive at Rampart with the father and unconscious diabetic son, the type of ambulance that backs up to the ER entrance is a station wagon, but in the interior shot from Rampart the ambulance type is a truck.
Continuity mistake: When Dixie goes to the waiting room to get Pete Barlowe so she can bring him to see Brackett, we see Carol, the nurse with black hair, working behind the admitting desk, but in the next shot Carol is in the treatment room with Brackett and Pete's wife.
Continuity mistake: When John and Roy walk into the house with the pregnant gunshot victim, only John's wearing a helmet and he places it on the floor near the victim's husband, but in all of John's closeups (from the unusual POV looking up at him) his helmet is on the counter. Additionally, there are blue glasses upside-down on the side of the dish drainer, but in those closeups of John the glasses have vanished, and the glasses vanish again when Roy helps the husband get on his feet. Also notice that there's now a blue glass in the sink.
Continuity mistake: There are only two ambulance attendants who take the pregnant gunshot victim to the vehicle, but en route we see two attendants in the front seat - driver and passenger, and a third attendant is in the back with John and the victim. Then when they reach Rampart, the attendant that was in the back with John has vanished and he's the one who opens the back door from the outside. As an aside, in the ambulance, when John talks to Rampart about fetal heart tones, we see the attendant is actually mucking around with the IV drip.
Answer: It is standard practice to wet down driveways so that they stand out in a long shot.
stiiggy