A thread of some basic road markings and their meanings 
1. Broken White Line
A broken white line simply indicates that you can change the lane, but with caution.

1. Broken White Line
A broken white line simply indicates that you can change the lane, but with caution.
2. Straight White Line
Unlike the broken white line, a straight white line is only made on a two-way road and it implies that you can't overtake the vehicle ahead, in other words, YOU ARE NOT ALLOWED TO CHANGE LANES.
Unlike the broken white line, a straight white line is only made on a two-way road and it implies that you can't overtake the vehicle ahead, in other words, YOU ARE NOT ALLOWED TO CHANGE LANES.
3. Single Straight Yellow Line
This is also made on a two-way road. The yellow line implies that overtaking a vehicle is allowed, but crossing the yellow line is not allowed. This is why, a single yellow line is also made on the side of the lanes, implying the end of the road
This is also made on a two-way road. The yellow line implies that overtaking a vehicle is allowed, but crossing the yellow line is not allowed. This is why, a single yellow line is also made on the side of the lanes, implying the end of the road
4. Double Straight Yellow Lines
 In case of double straight yellow lines, passing is strictly restricted.
 In case of double straight yellow lines, passing is strictly restricted.
5. Broken Yellow Line
This is also like the broken white lines where one vehicle can overtake the other, but with caution.
This is also like the broken white lines where one vehicle can overtake the other, but with caution.
6. Straight Yellow Line with Broken Yellow Line
This implies that if you are driving on the side of the broken line, you can't overtake any vehicle, but if you're driving on the straight line, you can overtake.
This implies that if you are driving on the side of the broken line, you can't overtake any vehicle, but if you're driving on the straight line, you can overtake.
There are other road markings, but these are the basic ones we mostly see
, and also some markings are different depending on the countries.
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