The traffic volume is usually expressed in ______

The first stage of the parking lot is ______

Which of the following method is more accurate for traffic analysis?

Which of the following is not an intersection at grade?

Which of the pavement is better for highway lighting?

The capacity of an uncontrolled intersection is ______

If the object appears darker than the road surface it is called ______

Which type of board should be installed if the speed limit is 100kmph?