Dipod is what happens when driving instructors sit down in a studio and compare notes. Peter King, an ADI from St Albans, does the introductions. Nick, another ADI, and Elliot, a retired one, are the steady voices beside him in recent recordings. Others come and go: Graham Stilwells is named in the studio on 'Show 255 - Training ADIs', and a Jason is thanked for filling in while Elliot was away. The conversation rarely goes straight to its subject. The clocks changing, birthdays and new headphones all come up, and one recording starts with a joke that the group has been talking for two hours without getting going. Then the job takes over, and the job is the reason to listen. The episode titles show the range: 'Show 253 - Controlled Stop' and 'Show 256 - Ready For Test' deal with the test, 'Show 255 - Training ADIs' with the instructors, and 'Show 254 - Road Safety Strategy' and 'Show 252 - Road Safety Publication' with policy. The excerpts fill that range with first-hand material. One instructor describes a new pupil who was about to follow the car in front through a gap rather than wait, and who said his last instructor had told him that was fine. That sets off a short, pointed argument about whether an oncoming driver who stops is really waiting or simply has no choice. Another instructor recalls their own part two in Barnet, where the controlled stop came at 60 miles an hour on a country lane, and the group notes that a test can include more than one. On learner progress, Nick describes getting out his record cards to show a pupil on lesson seven how far there is to go, and compares it to a pilot with only seven hours of flying. The group then asks why learners need more lessons than they once did, and rejects traffic as the explanation. Intensive courses lasting a week or two draw open doubt about how many of those pupils really pass, and how safe they are. So do calls from parents who want a single lesson before the test, which one instructor handles with terms and conditions that keep the car away from the test. On training, a speaker argues that ADIs should be better qualified to deal with conditions such as dyslexia, which they say can affect judgement at the wheel. The same speaker asks how many instructors take a medical history that covers diabetes, allergies, EpiPens, asthma and medication. The policy talk is just as practical: someone suggests a learner logbook split into an instructor's part and a pupil's part, and someone else asks whether a six-month learning period has any research showing that it makes better drivers. Disagreement happens in the open, down to one participant cheerfully telling the other two that they are both wrong. The talk also mentions CPD notes at the end of each show, and 'see you on the roundabout' comes up at more than one sign-off. The show is sponsored by the ADI NJC, the Approved Driving Instructors National Joint Council.