Appendix 3a tells drivers to use the vehicle's inertia. Which action matches that teaching?

1. Accelerate hard toward every red light so momentum is 'used'
2. Disconnect the retarder on the level so inertia is maximised
3. Look ahead, lift early, and let the mass of the vehicle carry it toward a planned slowing point instead of braking late from high speed
4. Ignore tyre pressure because inertia overrides rolling resistance