Second.—He shall coöperate with the local officials in choosing a detour.

Third.—He shall provide for the proper marking of the detour.

Fourth.—He shall provide for the maintenance of the detour and report such provision in the central office.

Speed Signs.

—Most cities and towns have speed limits lower than that allowed in the open country. Some of them even divide the city into zones and make a different limit for each zone. On the outer edge of these zones and the outer edge of the city are often placed signs of warning such as “Speed Limit, 15 miles per hour.” In one city was facetiously added “Go slow and see our city, go fast and see our jail.” On the backs of these signs, the side seen by the traveler as he leaves, are sometimes painted the words “You’re Welcome—Come Again.” All of which is to give the traveler a good impression and thus advertise the community.

Traffic Guides.

—Before leaving the subject perhaps something more should be said about traffic guides in the cities as most of what precedes has been written with a view to country roads, although many of these signs are applicable to city streets.

Lines upon the pavement should be used to define crosswalks, parking spaces, and restricted and reserved zones. Curbstones may be painted white or yellow to indicate no parking against them. In parking spaces the stall lines are painted, as this will keep vehicles close together and more will be able to park. If they are allowed to drive in promiscuously there will often be half and three-quarter spaces which cannot be used. Painted lines should be about 4 inches wide. If well put on with good paint they will wear for a considerable period. A painted line down the center of a roadway, especially on curves, is a great convenience and safety device for passing vehicles.

Eno tells us that the earliest traffic regulation signs in New York were worded “Slow moving Vehicles, Keep Near Curb.” These were followed gradually by many others.

It is not necessary to place on signs the name of the department authorizing them as, “Police Department,” “Department of Streets and Alleys,” as these take up room and make the signs no more impressive. The simpler and shorter the wording the better. I have been told, I did not see it, that in Boston instead of having a sign read “One-way Traffic,” it is made to say, “Vehicles Using This Street Will Follow in the Direction of the Arrow Only.” This may be merely a slam at the Bostonese but it illustrates the point.