Lights on top of buses?

JoeRaj SG

Hello guys, I have had this question for at least 35 years, and until now, I havent found the answer. (Not that I have asked it a lot)

But I now realsie that you good ppl, will most probably be able to answer them for me.

You know all buses, esp double deckers, have these 2 small lights at either sides on the top of the buses. Some hv it at the back as well, these 2 purple, pink or red lights (usually) near the roof.

What are they for? Surely it can be a warning of it's height or is it? Even newer buses have them. It cant be for the drivers to see heighst either, the lighst are too small and ineffective, so what are they for?

Any clues? Thanks

FireIce SG

for 飞机 drivers

or ppl hiding in trees

Mr Milo SG

the lights are there to shoot lasers at birds who have taken a fancy to the bus

SBS6060M SG

the lights are there to shoot lasers at birds who have taken a fancy to the bus

light sabers to shock aliens.

JoeRaj SG

the lights are there to shoot lasers at birds who have taken a fancy to the bus

I like this answer!!

TIB 501 D SG

the lights are there to shoot lasers at birds who have taken a fancy to the bus

Cos later the birdz will defacate on top of the bus...

TIB1218R SG

the lights are there to shoot lasers at birds who have taken a fancy to the bus

SBS2656X SG

No light = what happened to SBS9400X just that it is night time.

Yeap, you've guessed it. That Volvo Olympian that became a single deck whilst on service 87. Some dead.

vicamour SG

For warning purposes.

JoeRaj SG

For warning purposes.

Yeah I know but to warn what?

smokey the bear SG

i think its is to indicate the height/clearance at night

vicamour SG

Yeah I know but to warn what?

i think its is to indicate the height/clearance at night

Hope you got your answer. It is more of a height warning at night.

Especially for low flying aircrafts flying in open areas. Not really applicable in urbanised Singapore but just as a safety precaution.

More common for tall vehicles in USA, Australia, Europe and other parts of Asia.

Mr Milo SG

yes, the height warning is the true answer

most tall buildings if u notice, they have this light (always red) installed on the corners or the top of the buildings

at night, they light up, warning low flying aircraft of such hazards

of couse, these lights are unable to warn birds though