How white lines are visible in photos taken during night hours in high ways?

Both excellent pics. That has answered something which has always baffled me (not difficult I know)

Or stand on a motorway bridge!

ns7 by Chris Globe, on Flickr

Lovely.
Next time, go 100 yards left and get the yellow winkers as they take that junction.

Nice shot Chris.

Or stand on a motorway bridge!

ns7 by Chris Globe, on Flickr

yep long exposures !!

as moggy mentioned a tripod is favourable although not always necessary

bean bags and roadside furniture and walls can suffice as long as the camera stays firm with no movement

to avoid even more shake if you do not posses a remote shutter release use the self timer function

as that locks up the mirror on slr’s before firing the shutter thus elliminating mirror blur also you can let go of the camera and eliminate human movement as well

the best time to shoot is during ” the blue hour ” IE the hour before sunrise and the hour after this gives the most stunning blue and purple skies whilst being dark enough for time exposures

for extra creativity i also use flash on foreground objects

there is lots of creative possibilities in time exposure and some phenomenal results when you get it right !!

Simply by fixing the camera on the tripod and leaving the shutter open for long enough that it captures the headlights of the cars. It is dark and the cars themselves never stay in one place long enough to reflect enough light back to the camera for them to capture the image.

On my image below of Paris at night, the cars that are stopped are visible, whilst the one that went through the lights travelling left to right (and a couple of others) leave only the trace of their lights, not the car itself.

Moggy