Truck

Inside the Vehicle Cab

Introduction
The subject matter below covers the regulations concerning items within the vehicle cab. However, due to the importance of Seat Belts from a Safety standpoint, we've dealt with this subject seperately and which can be found within this section here - Seat Belts.

Windscreen and Wipers
Regulation 34 Road Vehicles (Construction and Use) Regulations 1986 concerns the fitting of windscreens and wipers.
Every vehicle fitted with a windscreen shall, unless the driver can obtain an adequate view to the front without looking through the windscreen, be fitted with one or more efficient automatic windscreen wipers capable of clearing the windscreen so that the driver has an adequate view of the road in front of both sides of the vehicle and to the front of the vehicle.
It must also be fitted with a windscreen washer capable of clearing, in conjunction with the wiper, the area of windscreen swept by the wiper of mud or similar deposits.

Exemptions To the requirement for a windscreen washer:

Maintenance
Regulation 34(6) Road Vehicles (Construction and Use) Regulations 1986 states that every wiper and washer required to be fitted shall, whilst the vehicle is being used on a road, be maintained in efficient working order and be properly adjusted.

Mascots
Regulation 53 Road Vehicles (Construction and Use) Regulations 1986 states that no mascot, emblem or other ornamental object shall be carried by a motor vehicle in any position where it is likely to strike any person with whom the vehicle may collide unless the mascot is not liable to cause injury to such a person by reason of any projection thereon except:

Speedometers
Fitting Regulation 35 Road Vehicles (Construction and Use) Regulations 1986 states that every motor vehicle shall be fitted with a speedometer except:

Vehicles first used on or after 1st April 1984 the speedometer should be capable of indicating the speed in miles per hour and kilometres per hour. Vehicles may instead comply with EC Regulation (Community Directive) 97/39 or ECE Reg 39.
These directives stipulate the markings, graduations of the speedometer and refer to 75/443/EEC which specifies the tolerances.
The indicated speed must never be less than the true speed (it must read exact or high) and between 40km/h and 120km/h the error must not exceed 10% + 2.5 m.p.h. high (true speed/10 + 4kph).
This means at a true speed of 25mph or 40km/h the speedometer may read 40/10+4 = 8km/h or 5mph high = 30mph indicated.

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Maintenance
Regulation 36 Road Vehicles (Construction and Use) Regulations 1986 states that the speedometer fitted to a vehicle must be kept free from any obstruction which may prevent it from being easily read and shall at all times it is used on a road be maintained in good working order except if:

Audible Warning Instruments
Fitting of Horns and Alarms Regulation 37 Road Vehicles (Construction and Use) Regulations 1986 states that every motor vehicle with a maximum speed of more than 20 m.p.h. shall be fitted with an audible warning instrument (horn) except an agricultural motor vehicle unless it is being driven at more than 20 m.p.h.
The audible warning instrument fitted to a wheeled vehicle first used on or after 1/8/73 should be continuous and uniform and not strident.

Nothing in this regulation forbids the use of:

Use of Horns and Alarms
Regulation 99 Road Vehicles (Construction and Use) Regulations 1986 states that horns and other warning instruments must not be used:

No person shall sound or cause or permit to be sounded on a road a reversing alarm or a boarding aid alarm unless it is fitted to:

They must not emit a sound likely to be confused with that from a pedestrian crossing. A boarding aid alarm means an alarm for a power operated lift or ramp fitted to a bus to enable wheelchair users to board and alight and designed to warn persons that the lift or ramp is in operation.

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