sch.2-sec.87Performance of braking systems

sch.2-sec.87 Performance of braking systems

The braking system of a heavy motor vehicle built after 1930 or a heavy combination that includes a heavy motor vehicle built after 1930 must, on application of a brake, be able to produce the performance mentioned in subsections (2) to (4) — when the vehicle is on a dry, smooth, level road surface, free from loose material; and whether or not the vehicle has goods or passengers in it; and whether or not the vehicle is used alone or as part of a combination; and without part of the vehicle moving outside a straight path— centred on the longitudinal axis of the vehicle before the brake was applied; and 3.7m wide. The braking system of a heavy motor vehicle or heavy combination that includes a heavy motor vehicle built after 1930 must bring the vehicle from a speed of 35km/h to a stop within— 16.5m when the service brake is applied; and 40.5m when the emergency brake is applied. The braking system of a heavy motor vehicle or heavy combination that includes a heavy motor vehicle built after 1930 must decelerate the vehicle, from any speed at which the vehicle can travel, by an average of at least— 2.8m a second a second when the service brake is applied; and 1.1m a second a second when the emergency brake is applied. The braking system of a heavy motor vehicle or heavy combination that includes a heavy motor vehicle built after 1930 must achieve a peak deceleration of the vehicle, from any speed at which the vehicle can travel, of at least— 4.4m a second a second when the service brake is applied; and 1.5m a second a second when the emergency brake is applied. The parking brake of a heavy motor vehicle or heavy combination must be able to keep the vehicle, or any combination of which it is a part, stationary on a 12% gradient— when the vehicle or combination is on a dry, smooth road surface, free from loose material; and whether or not the vehicle or combination has goods or passengers in it. (sch.2-sec.87-ssec.1) The braking system of a heavy motor vehicle built after 1930 or a heavy combination that includes a heavy motor vehicle built after 1930 must, on application of a brake, be able to produce the performance mentioned in subsections (2) to (4) — when the vehicle is on a dry, smooth, level road surface, free from loose material; and whether or not the vehicle has goods or passengers in it; and whether or not the vehicle is used alone or as part of a combination; and without part of the vehicle moving outside a straight path— centred on the longitudinal axis of the vehicle before the brake was applied; and 3.7m wide. (sch.2-sec.87-ssec.2) The braking system of a heavy motor vehicle or heavy combination that includes a heavy motor vehicle built after 1930 must bring the vehicle from a speed of 35km/h to a stop within— 16.5m when the service brake is applied; and 40.5m when the emergency brake is applied. (sch.2-sec.87-ssec.3) The braking system of a heavy motor vehicle or heavy combination that includes a heavy motor vehicle built after 1930 must decelerate the vehicle, from any speed at which the vehicle can travel, by an average of at least— 2.8m a second a second when the service brake is applied; and 1.1m a second a second when the emergency brake is applied. (sch.2-sec.87-ssec.4) The braking system of a heavy motor vehicle or heavy combination that includes a heavy motor vehicle built after 1930 must achieve a peak deceleration of the vehicle, from any speed at which the vehicle can travel, of at least— 4.4m a second a second when the service brake is applied; and 1.5m a second a second when the emergency brake is applied. (sch.2-sec.87-ssec.5) The parking brake of a heavy motor vehicle or heavy combination must be able to keep the vehicle, or any combination of which it is a part, stationary on a 12% gradient— when the vehicle or combination is on a dry, smooth road surface, free from loose material; and whether or not the vehicle or combination has goods or passengers in it.