components of roads and their functions

2:02

3:17

1:16:12

42:23

13:36

8:02

25:34

25:54

1:15:27

11:21

11:21

1:59

9:24

1:59

4:48

8:06

6:53

6:19

6:19

6:19

2:41

1:33

3:02

7:29

2:01:48

12:54

4:25

35:25

3:46

15:17

1:40

7:29

5:39

30:01

30:01

6:53

1:40

4:43

9:35

10:27