How do F1 race starts work? Can you score a podium in F1 Sprint? What are the rules on teams sharing reserve drivers? You ask, F1 Explains with the help of F1TV commentator Alex Jacques and F1 strategist Bernie Collins.  The team explains why F1 Grands Prix start when five red lights go out, explore the history of F1 race starts, and Alex reveals the secrets to commentating on the action-packed opening moments of a race.  Plus, how is a top 3 finish in F1 Sprint officially recorded, which teams have deals to share their reserve drivers, why are F1 rule changes announced years before they come into effect, and how do race strategists like Bernie work out how fast their car will be in a race? Send Katie Osborne and Christian Hewgill your latest Formula 1 question and F1 Explains will tackle it in a future episode. Write an email or record and attach a voice note and send it to [email protected] F1 Explains tackles a different F1 topic every week. Check out our previous episodes using the links below: DRS - how F1's overtaking aid works and why it matters Tyres - an engineer, a driver and a designer explains why they matter The 2024 F1 calendar - why it helps make F1 more sustainable Wind Tunnels - the top secret tools where cars are created Race engineers - the voices on F1 Team Radio Pit stops - two seconds of total teamwork Simulators with Aston Martin's Stoffel Vandoorne Racing in the rain with Mika Hakkinen + Haas race engineer Mark Slade Street circuits with Mika Hakkinen + Bernie Collins F1 driver fitness with Alexander Rossi + Sebastian Vettel's former trainer F1 in the USA - why the US has 3 races in 2023 F1 Sprint weekends with Haas driver Kevin Magnussen For in-depth interviews with F1's biggest names, listen to F1 Beyond The Grid. For race previews and reviews, head over to F1 Nation.