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State of Punjab - Section

Section 28 in Technical Specifications of HVAC Ordinary Bus

28. Destination boards.

- The three destination boards of appropriate size as per the bus code and with each written in English and Punjabi must be installed at the front, rear and side of bus as per the following details.
28.1Front Destination Board. - There shall be display of destination with options in Punjabi and English along with route number in Arabic numerals. The display shall be clearly visible in all weathers at a distance of 50 m.
28.2Side Destination Board. - There shall be display of destination with options in Punjabi and English along with route number in Arabic numerals. The display shall be clearly visible in all weathers at a distance of 5m.
28.3Rear Destination Board. - There shall be display of destination with options in Punjabi and English along with route number in Arabic numerals. The display shall be clearly visible in all weathers at a distance of 15 m.
29.0Bumpers.- 29.1 The bus shall be provided with front and rear bumper of FRP molded in three piece constructions. The bumper shall be easily repairable/replaceable. The bumpers shall conform to the requirements of CMVR, AIS (069), Bus Code/any other international standard.
30.0Towing device.- Heavy-duty ring type towing devices shall be provided in the front and rear bumpers area with load transfer to bus structural members. The capacity of each towing device shall be 1.2 times (minimum) the kerbed weight of the bus within 30 degrees of the longitudinal axis of the bus.
31.0Wind screen-Front and Rear.- Front wind screen in the bus shall be in single piece design, plain/flat with curved corn, PVB film laminated safety glass of minimum thickness of 8.00 mm. Rear windscreen shall be in single piece design, curved with flat in centre toughened glass of thickness of 5.5. mm (+0.3 mm). Windscreen glasses shall meet the requirements of BIS 2553: Part II-1992 or latest and that of CMVR and Bus Code. The glazing used for fitment of glasses shall be Ethylene Propylene Die Monomer (EPDM) rubber of black colour or pasted with adhesive material conforming to Indian/International Standards. A grab handle on the outside of the windshield centre at waist level shall be provided to facilitate manual cleaning of the windscreens.
32.0Wind screen wipers.- Electrically operated wind screen wiper system having two wiper arms with blades shall be provided. The wiper motor shall be heavy-duty steel body for minimum of two-speed operations. The wiper arms shall rest horizontally when not in use. The sweep angle shall be sufficiently wide for clear view during rainy days. The windscreen wiping system shall be 24 V, variable speed, pantograph type fitted with time delay relay. The windshield washer system shall deposit washing fluid on the windshield and when used with the wipers, shall evenly and completely wet the entire wiped area. The windshield washer system shall have two minimum 2.5 litre tanks located for easy refilling from inside the bus and two Nozzles at suitable location for proper spray of fluid. Reservoir pumps, lines and fitting shall be corrosion resistant and reservoir itself shall be translucent for easy determination of fluid level. The windscreen wiping system shall be in accordance with CMVR/BS: 7827 Part 1, 2, 3 (section 1, 2) or latest.
33.0Fire extinguishers.- Multi purpose fire extinguishers shall be ISI marked conforming to BIS: 13849-1993 or latest, dry power type (Stores pressure) duly filled, of capacity and quantity as per the provisions of GSR-853(E), dated 19th November, 2001 notification of Government of India, Bus Code. Fire extinguishers shall be fitted with proper reinforcement. The enclosure box shall have transparent breakable glass at front cover.
34.0First aid kit.- First aid kit competes with items, medicines, bandages etc. shall be provided as per the provisions of CMVR fitted near driver seat at appropriate position and level on side with proper reinforcement.
35.0Bus dimensions.- The bus shall be with wheel base of 6100 mm to 6500 mm (with ramp over angle from 4.8 deg. to 5.1 deg.) with the front and rear overhang shall not exceed than as specified in MVA/CMVR. The total length of the bus shall be max. 12 metres (1200 mm) with minus tolerance of 100 mm. The total width of the bus shall be 2600 with minus tolerance of 30 mm. The overall height of the bus shall be maximum 3800 mm. The approach and departure angles shall not be less than 9 degree each in unladen condition. The approach angle is the angle measured between a line tangent to the front tyre static loaded radius arc and the initial point of structural interference forward of the front type to the ground. The departure angle is the angle measured between a line tangent to the rear tyre static loaded radius are and the initial point of structural interference rearward of the rear tyre to the ground. The turning circle radius shall be as per IS 9435-1980 (or latest) the ground clearance within the wheelbase shall not less than 270 mm. The Axle clearance shall not be less than 191 mm. Axle zone clearance is projected area between the tyres and wheels on the same axial centerline- The wheel area cleareance shall not be less than 254 mm for parts fixed to the bus body and 203 mm for the parts that move vertically with Axles. Ramp over angle required for clearing ramp height of 270 mm shall be 4.8 to 5.1 as given below:
Sr. No. Wheel base (mm) Ramp over angle (degrees)
1 6100 5.1
2 6300 4.9
3 6500 4.8
Note. - Ramp over angle is defined as tangent inverse of 270 mm divided by half of the wheelbase.
36.0Battery, Alternator, Self-starter.- 36.1 The battery system shall be 24 V of minimum 180 Amps-hour capacity, sealed and maintenance free type lead acid batteries. The batteries shall be well secured to a hinged/pivoted or slide out type carrier for ease of access for repair and maintenance, replacement and suitably ventilated for escape of fumes but insulated against ingress of dust and moisture. The battery box shall be mounted near/next to the engine compartment and shall be well secured, easily accessible and ventilated. Performance requirements of the batteries shall conform to B1S: 7372-1995 (or latest).
36.2Battery terminals with positive locking system (e.g. angle type terminal with provision for double bolting) duly protected against all possible short circuit risk shall be provided.
36.3Each battery cable shall be covered with flame retardant Gray colour corrugated flexible pipe and shall be properly encased and clamped.
36.4A relay controlled battery cut-off switch (isolator switch) shall be provided near the driver seat on side panelling at appropriate level for disconnecting all battery positives except for safety devices such as wire suppression system and other systems as specified. Two points of battery cut off switch shall be connected with the battery and two points shall be connected with self-starter. The battery cut-off switch with the power plant operating shall not damage any components of the electrical system in off position. The battery cut-off switch shall be capable of carrying and interrupting the total circuit load.
36.5The bus shall have 24 Volt D.C. with double pole wiring for all its Electrical equipments except in unavoidable circumstances to avoid sparking in bus. A separate system/mechanism shall be provided for the discharge of electro static charge induced during the operation of vehicle. A precaution shall be taken in case of single pole wiring to avoid spark in items such as self, alternator etc.
36.6An adequate capacity alternator of 24 V D.C. with consistent output shall be provided and so located as to minimize ingress of oil or rain water into it.
36.7A pre-engaged type 24 V D.C. self-starter of adequate capacity with relay shall be fitted in the bus and so located as to minimize ingress of oil or rain water into it.
37.0Electrical Equipment and wiring.- 37.1 Electrical equipment and wiring shall be conforming to Indian/international standards. All cabling shall be as per the provisions of the Bus-code. The wiring shall be flame proof, ISI marked conforming to BIS- 2465-1984 or latest. As far as possible electrical system shall be 24 V double pole wiring except in unavoidable condition. However, in case of single pole wiring all power and ground wiring shall have double electrical insulation, which shall be waterproof conforming to the Indian/International Standards. Wiring shall be grouped, numbered and colour coded. Wiring harness or insulated for the highest voltage present in the harness. Kinking, grounding at multiple points, stretching and exceeding minimum bend radius shall be prevented.
37.2The wiring looms/harness for vehicle system of the bus shall be properly routed, encased/concealed type so mounted to eliminate chances of any spark. The manufacturer shall be required to provide the details of the above wiring loom including circuit diagram, lay out of controls etc. Wiring support shall be protective and non-conducted at areas of wire contact and shall not be damaged by heat, water, solvents or chaffing.
37.3All electrical fittings and lights shall be fully wired up, running in flame retardant black colour PVC sleeves as per applicable Indian standards and installed in a manner to facilitate easy inspection/rectification/replacement etc. as and when required without disturbing internal finish/decor of the bus. Whenever any wire or cable or PVC sleeve carrying cable etc. passes through holes in the sheet metals/ structural member, suitable rubber gromments/Bakelite, inserts shall be provided in these holes to avoid direct contact between cables and sheet metal causing damage to the insulation coating.
37.4Design of the electrical, electronic and data communication system shall be modular so that each major component, apparatus panel or wiring bundle is easily separable with standard hand tools or by means of connectors. Each module except the main body wiring harness shall be removable and replaceable. Power Plant wiring shall be an independent wiring module. Replacement of engine compartment wiring module shall not require pulling wires through any bulkhead or removing any terminals from the wires.
37.5The electrical system and its electronic components shall be capable of operating in the area of the vehicle in which they will be installed. Electrical and electronic equipment shall not be located in an environment that will reduce the performance or shorten the life of the component or electical system. No vehicle component shall generate or be affected by electro-magnetic interference or radio frequency interference (EMI/RFI) that can disturb the performance of electrical/electronic equipments.
37.6All the electrical and electronics hardware shall be accessible and replaceable easily. It shall be mounted on an insulating panel to facilitate replacement. The mounting of the hardware shall not be used to provide the source ground and all hardware shall be isolated from potential EMI/RFI.
37.7All electrical/electronic hardware mounted in the interior of the bus shall be inaccessible to passengers and hidden from view unless intended to be viewed.
37.8All electrical/electronic hardware mounted on the exterior of the vehicle i.e. not designed to be installed in an expose environment shall be mounted in a sealed enclosure.
37.9All electronic hardware and its mountings shall comply with the shock and vibration requirements.
37.10All branch circuits except battery to starting motor and battery to generate/alternator circuits shall be protected by circuit breakers or fuses sized to the requirements of the load. Electronic Circuit protection for the cranking motor shall be provided to prevent engaging of the motor for no more than 30 seconds at a time to prevent overheating. Circuit breakers or fuses shall be sized to a minimum of 15% larger than the total circuit load current. The current rating for the wire used for each circuit must exceed the size of the circuit protection being used.
37.11To the extent possible wiring shall not be located in environmentally exposed locations under the vehicle. Wiring and electrical equipments necessarily location under the vehicle shall be insulated from water, heat, corrosion and mechanical damage. Where feasible front to rear electrical harnesses should be installed above the window line of the vehicle.
37.12All Electrical motors shall be easily accessible for servicing.
37.13Two separate additional outlets are to be provided with appropriate relays and fuses in wiring harness for fitment of electrical auxiliary devices/systems to be added later on in the buses, if required.
37.14One DC -AC converter output of 110--220V is also to be provided at suitable location for charging of electrical/electronic, equipment like Mobile Phone, etc.
37.15If any electronic components have an internal clock, it shall provide its own battery back up to monitor time when battery power is disconnected.
37.16All electronic component suppliers shall ensure that their equipment is self-protecting in the event of shorts in the cabling and also in over- voltage and reverse polarity conditions. If an electronic component is required to interface with the other components it shall not require external pull up and/or pull down resistors.
38.0Lights and Lighting System.- All the lighting Installation should be as per AIS 008 Standards.
38.1Interior saloon lighting shall be sunken type tube light assembly fitted with 24V, 20W transistorized inverter as per BIS 7027:1984 or latest with 2 ft long slim type fluorescent tube of 18W as per BIS 2418 (part 1)-1977 (or latest), and mounted in staggered formation for uniform lighting in two separate circuits. The first row of lamps provided in the driver's cabin should be fitted with amber internal fitter to reduce glare to driver at night.
38.2Modern rectangular type/round/asymmetrical headlamps with relay and side light etc. shall be suitably styled into front-end construction.
38.3White and Red marker lights of 5 Watts shall be fitted for both top side comers of the front and rear panel of the bus respectively.
38.4Identical signal lights of 15 Watts shall be fitted for interchangeability in each side of front.
38.5Brake lights (15 W) and taillights (10 W) shall be two separate lights to reduce heat generation.
38.6Reverse light of 25 W, square lamps with white covers shall be provided.
38.7Side markers shall be provided on both sides as per bus code/AIS 008.
38.8Rear signal lights, brake lights taillights and reverse lights shall be arranged vertically.
38.9The light wattage given above are indicative; however, all the lights and lighting systems shall conform to the requirements of Bus code, CMVR/Punjab MVR and other relevant AIS standards.
38.10A well-lighted bus registration number plate shall be fitted at rear as per the provisions of CMVR. The owner shall be required to comply with the directives/regulations regarding high security plates as/to be notified by the Government of India in the near future.
38.11Electrical fittings shall not be mounted on both front and rear bumpers.
38.12Switches shall be fitted on the right hand side of the instrument panel through evenly loaded circuits and fuses as per the bus code.
38.13A reverse buzzer shall be installed at the rear of the bus to sound intermittently when reverse gear is engaged.
38.14A suitable light shall also be provided in the engine compartment for ease of maintenance/emergency repairing.
39.0Performance Statements.- The manufacturer shall furnish the following information for the inspection of the bus: