- Hard shoulder see Motorways
- Hazard warning lights rule 116, rule 276, rules 277 to 279 and rule 283
- Hazard warning plates rule 284 and Vehicle markings
- Head restraints rule 97 and Vehicle maintenance, safety and security
- Headlamps and headlights rules 113 to 115, rule 226, rule 235 and rule 239
- motorcycle rule 87
- Headlight flashing rules 110 to 111
- Helmets
- cyclist rule 59
- horse riders rule 49
- incidents rule 283 and First aid on the road
- motorcyclists rule 83, rule 86, rule 283 and First aid on the road
- Hierarchy of road users rules H1 to H3
- High-Occupancy Vehicle Lanes (HOVs) rule 142 and Information signs
- Hills
- Home zones rule 206 and rule 218
- Horn rule 112, rule 195 and rule 214
- Horses
- crossings rule 27 and rule 81
- horse-drawn vehicles rules H1 to H3, rules 47 to 48, rule 52, rules 212 to 213 and rule 215
- junctions rule 170
- overtaking rule 163 and rule167
- ponies (feral and semi-feral) rule 215
- riders rules H1 to H3, rule 13, rules 49 to 55, rule 66, rules 154 to 155, rule 204, rules 212 to 215 and rule 253
- Ride Safe Award rule 52
- roundabouts rule 186
- shared spaces rule 13 and rule 63
- Hot weather rule 237
- HOVs see High-Occupancy Vehicle Lanes (HOVs)