Though conversion of two-way streets to one-way streets was very popular as it was a low-cost way to move high volumes of traffic through busy downtown quickly, there are various disadvantages in doing so.
If a two-way street is converted to one-way, it should be evaluated to see if additional changes are required, especially if the streets are overly wide. Also, traffic circulation in the broader area must be carefully considered.
Yes. One Way Signs are regulatory. Regulatory signs shall be used to inform road users of selected traffic laws or regulations and indicate the applicability of the legal requirements.
The MUTCD R6-1 One Way Sign (where one way is printed inside the arrow) must at least be 36” x 12” on single-lane conventional roads and 54” x 18” on multi lanes, expressways and freeways.
The other R6-2 One Way Sign (where the arrow is printed below the text - One Way) must be at least 24” x 30” on single-lane conventional roads, 30” x 36” on multi lanes, 36” x 48” on expressways and 48” x 60” on freeways. The minimum size for this design can be 18” x 24”.
These are the minimum size requirement as per MUTCD Section 2B.03. In practice, we suggest you use bigger signs because a bigger sign can be seen from a greater distance and over large trucks and SUVs too. Every state can have its own requirement on sign size and sign mounting height too. So it is advisable to check with your local traffic laws before deciding on the right size.
One Way Sign regulates traffic on streets or roadways where only unidirectional traffic is allowed to move. As per MUTCD guidelines, One Way Signs should be placed in particular areas according to the kind of intersections these are used on.Section 2B.37 of MUTCD states that-
The MUTCD R6-1 One Way Sign must be a horizontal rectangular black sign with a white border. The words "ONE WAY" in black are superimposed on a large white arrow.
A MUTCD R6-2 One Way Sign must be a vertical rectangular white sign with a black border and the words "ONE WAY" in black on two lines above a black arrow.