Bike helmets and roads Lesson 72 of the medicine course of Mova's primary school: 15 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: the lesson at school .
1 A helmet only works on your head, level, about two fingers above your eyebrows, buckled with room for about one finger under the strap; pushed back like a halo it leaves the forehead bare, and unbuckled it flies off before you land. 2 Helmet foam is made to crush once, so after a crash you get a new one even if it looks fine; a bad head injury can change a life for good, and some children are killed on bikes every year on UK roads. 3 Roads need more than balance: lights after dark, ears free of music, never riding out between parked cars, never riding up beside a lorry, and brakes checked before every ride; Bikeability training teaches road riding on real roads. 4 A car at 30 mph needs about 23 m to stop, and a lorry driver sitting high up may not see a child next to the cab at all, so the rider who stays seen and stays back is the one who gets home. 5 In a fall a helmet's foam crushes and spreads the force so less reaches the skull and brain. 7 A helmet should sit level, about two fingers' width above the eyebrows, with room for about one finger under the buckled chin strap; pushed back, it leaves the forehead bare, and many falls land on the front of the head. 8 An unbuckled helmet comes off in a crash before the head hits the ground. 9 Helmet foam is built for one big hit; after a crash it may be damaged inside even if it looks fine, so it should be replaced. 10 By law, a bike ridden at night in the UK needs a white front light, a red rear light and a red rear reflector. 11 Drivers see a small rider in dark clothes very late, especially in rain and at dusk. 12 Hearing warns you about cars behind you and around corners, so earbuds take away that warning. 13 The Highway Code gives a stopping distance at 30 mph of about 23 m: about 9 m thinking plus 14 m braking. 14 Riding out between parked vehicles means drivers can't see you until the last moment. 16 Bikeability training has 3 levels, from control in the playground to quiet roads to busier roads, and is often done in Year 5 or 6. 17 Feet can't stop a bike at speed; brakes, tyres and chain should be checked before every ride, and a bike with a broken brake isn't ridden. ← previous Swimming out too far: sea, rivers, lakes and quarriesnext → Trampolines, playgrounds and skate parks↑ back to Medicine This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/medicine/72-bike-helmets-and-roads/