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Bus driver tips: 12 practical tricks learned on the road

12 tricks experienced bus drivers know: air pressure, retarder, tail swing in turns, vehicle height, tachograph, AdBlue in winter, and the reason behind each.

The HellasBus team 7 min read

Illustration: a bus driver’s view with steering wheel and road ahead, a light bulb for tips and icons for mirrors, height, tachograph and air conditioning
Contents
  1. 1. Why walk around the bus before you set off?
  2. 2. Why wait for the air pressure to build before you drive off?
  3. 3. How do you use the retarder properly?
  4. 4. How do you warm up the engine in the morning?
  5. 5. Why not switch off straight after a climb?
  6. 6. How do you turn a bus without hitting anything with the tail?
  7. 7. How do you set up mirrors and cameras?
  8. 8. Why do you need to know your bus’s height?
  9. Buses available at HellasBus right now
  10. 9. How do you plan breaks around the tachograph?
  11. 10. What do you do about AdBlue and fuel in winter?
  12. 11. Why switch off the battery isolator at night?
  13. 12. How do you keep passengers happy with the air conditioning?
  14. Where can you find more about your bus?
  15. Frequently asked questions
  16. Sources

The tricks experienced bus drivers rely on are mostly habits. They walk around the vehicle before starting, wait for the air pressure, use the retarder from the top of the descent, watch the tail in turns and plan their breaks properly. These habits cost very little time and save you breakdowns, fines and bad moments with passengers.

We have collected twelve of these tips, each with the reason behind it. They apply to city buses, intercity buses, coaches and minibuses, and they are also useful for owners who train new drivers.

1. Why walk around the bus before you set off?

A walk around the bus catches in two minutes the problems that cost hours on the road, such as a soft tyre, an oil stain on the ground, a blown lamp or an open luggage hatch. Do it every morning and after every long stop.

Look under the vehicle for drips. Black is usually engine oil, green or pink is coolant and red is gearbox oil. Check that all the wheel nuts are in place and that the mirrors haven’t moved overnight. Inside, glance at the emergency hammers, the fire extinguisher and the first-aid kit, and make sure luggage isn’t blocking the emergency exits.

2. Why wait for the air pressure to build before you drive off?

Air works the brakes, the suspension, the doors and often the gearbox. If you set off before the low-pressure warning goes out, the brakes don’t have their full force and the suspension may not have reached the right height.

While you wait, listen to the system. The periodic “psst” once the air tanks are full is the air dryer purging moisture, and it is a good sign. If the air takes much longer than usual to build, tell your mechanic.

3. How do you use the retarder properly?

Switch the retarder on at the top of the descent, before your speed climbs, and save the brake pedal for the final stop. That keeps the brakes cool and ready for an emergency.

On long descents, such as Greece’s mountain roads, friction brakes heat up and lose effect if they work continuously. The retarder heats the coolant, so keep an eye on the temperature gauge too. With a manual or automated gearbox, a lower gear helps the engine brake.

4. How do you warm up the engine in the morning?

You warm it up by driving gently for the first few kilometres, without high revs or full load. Long idling to warm the engine wastes fuel and, on Euro 6 buses, fills the particulate filter faster.

The oil needs a few minutes of driving to reach every part at the right flow. In the same time the gearbox and the differential warm up as well. Let the air build, set off and drive gently until the temperature rises. In winter, give the engine a few more minutes before you push it on a climb.

5. Why not switch off straight after a climb?

After a climb or a fast motorway run, let the engine idle for a short while before you switch it off. The turbocharger spins very fast and runs hot, and the oil that circulates while the engine is running cools it.

If you switch off at once, the oil sits still inside the hot turbo. Over time this wears its bearings. The time you need to pull into the car park and stop calmly is usually enough.

6. How do you turn a bus without hitting anything with the tail?

In tight turns the rear of the bus swings outwards, to the opposite side from the direction you are turning. Before you turn, check the mirror on the outside of the turn as well.

On 13- and 14-metre coaches with a long rear overhang, the tail can hit a post, a parked car or a pedestrian on the pavement. Three-axle buses with a steered rear axle behave differently, so try the vehicle in an empty area before you take it into narrow streets. When reversing, have someone guide you from behind, always standing where you can see them in the mirror. If you can’t see them, stop.

7. How do you set up mirrors and cameras?

Adjust the mirrors or camera screens before you set off, so that you can see the side of the bus and the lane next to you. A bus has large blind spots, especially at the front right and at the rear.

If the bus has a blind-spot system, such as Mercedes-Benz Sideguard Assist, learn what warnings it gives and leave it switched on. On buses with MirrorCam, get used to the screens in an empty area before you go out on the road.

8. Why do you need to know your bus’s height?

A high-floor coach is around 3.6 to 3.7 metres tall. The third-generation Tourismo, for example, is 3.68 m high. Bridges, tunnels, hotel garages and filling stations with low canopies often have limits below that.

Write the vehicle height on a label in front of the driver, together with the length and weight. Abroad, height signs show metres, and in some countries feet. If you drive different vehicles, don’t rely on memory.

Buses available at HellasBus right now

Buses we own, parked at our premises in Litochoro, Pieria, ready to be inspected.

City bus

MERCEDES-BENZ CITARO

Year of manufacture
2010
Mileage
585,095 km
Gearbox
AUTOMATIC
Emission class
EURO 5

€16,900 + VAT

More...

Intercity / tourist coach

MAN LION'S COACH R07

Year of manufacture
2011
Mileage
671,390 km
Gearbox
MANUAL
Emission class
EURO 5 EEV

€51,900 + VAT

More...

Intercity / tourist coach

MERCEDES-BENZ SPRINTER 516

Year of manufacture
2013
Mileage
346,000 km
Gearbox
MANUAL
Emission class
EURO 5

€29,900 + VAT

More...

All buses

9. How do you plan breaks around the tachograph?

Plan the route so that 4.5 hours of driving are followed by a 45-minute break, which can be split into 15 and 30 minutes. Under Regulation (EC) No 561/2006, daily driving is up to 9 hours, and up to 10 hours twice a week.

The trick is the split break. A 15-minute stop while passengers have coffee and a 30-minute stop later cover the rule without upsetting the schedule. Insert your driver card correctly in the tachograph at the start of the day and check the tachograph clock. The digital tachograph required by Regulation (EU) No 165/2014 records driving, breaks and kilometres, so anything you don’t enter correctly shows up at an inspection.

10. What do you do about AdBlue and fuel in winter?

AdBlue freezes at −11 °C, but vehicles with SCR have heating that thaws it after start-up. Never add water or antifreeze to the AdBlue tank, and fill only from a pump or a sealed container.

Diesel also turns cloudy in severe cold and clogs the filters. If you are taking a group to a ski resort or to a cold country, fill up there with the winter diesel sold at local filling stations.

11. Why switch off the battery isolator at night?

The battery isolator switch cuts power to the whole vehicle while it stands parked. Modern buses have many electronic systems that draw current even when switched off, and one weekend is enough to drain a tired battery.

Before you switch it off, wait as long as the manufacturer specifies after shutting down, because some systems, such as AdBlue, finish their routines after the ignition is off. Also learn where the emergency door valves are. In a breakdown or an evacuation, you have to open the doors without power or air.

12. How do you keep passengers happy with the air conditioning?

Start the air conditioning with the doors closed a few minutes before passengers board, and clean the filters regularly. A bus that has stood in the July sun needs time to cool down.

Don’t set the temperature too low. A big difference from the outside temperature tires passengers at stops and loads the compressor. At stops where the doors stay open for a while, close the doors you don’t need.

Where can you find more about your bus?

For the maintenance your mechanic carries out, see our 10 maintenance tips for a used bus. For the models, read about the Tourismo and the Citaro.

If you are looking for a bus, the HellasBus catalogue has city buses, intercity buses, coaches and minibuses in Litochoro, Pieria, ready for registration. Call +30 23520 61222 or send a message on WhatsApp (+30 6977 400157).

Frequently asked questions

How many hours can a bus driver drive?

Under Regulation (EC) No 561/2006, daily driving time is up to 9 hours and can be extended to 10 hours twice a week. After 4.5 hours of driving, a 45-minute break is required, which can be split into 15 and 30 minutes. Weekly driving may not exceed 56 hours, or 90 hours over two consecutive weeks.

Why does a bus make a “psst” sound when it is standing still?

It is usually the air dryer purging moisture when the pressure regulator stops charging the air tanks. This is normal. If you never hear it, or you hear a continuous hiss, have the air system checked.

What do I do if the AdBlue freezes?

AdBlue freezes at −11 °C. Vehicles with SCR have heating in the tank and the lines, so it thaws after start-up. Do not add water, antifreeze or any other fluid to the tank.

Sources

  1. Regulation (EC) No 561/2006 on driving times and rest periods, EUR-Lex
  2. Regulation (EU) No 165/2014 on tachographs, EUR-Lex
  3. Diesel exhaust fluid (AdBlue), Wikipedia
  4. Mercedes-Benz Tourismo (dimensions, height), Wikipedia (DE)
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