Complete the summary below. Choose ONE WORD ONLY from the passage for each answer.

Guard rails

Guard rails were introduced on British roads to improve the [7] of pedestrians, while ensuring that the movement of [8] is not disrupted. Pedestrians are led to access points, and encouraged to cross one [9] at a time.

An unintended effect is to create psychological difficulties in crossing the road, particularly for less [10] people. Another result is that some people cross the road in a [11] way. The guard rails separate [12], and make it more difficult to introduce forms of transport that are [13].