34 - BULLETIN 393, U. S. DEPARTMENT OF AGRICULTURE. 
in the northeastern corner of the county, and considering it as the 
center of a traffic area, bounded by a circle with a radius of approxi- 
mately 3 miles and a total area of approximately 28 miles, the 
portion of the area in Dinwiddie County, comprising. one-fourth of 
the total, would be about 7 square miles. After the roads were 
improved it was practicable to conduct dairy and truck industries 
for a distance of 6 or 7 miles from Petersburg, and thus the radius 
was lengthened to 7 miles and that portion of the traffic area located 
in Dinwiddie County was increased to a total of 38.4 square miles, 
or an increase over the original traffic area of 31.4 square miles... 
In arriving at the total tonnage hauled on the improved roads, it 
was ascertained that about 232,000 bushels of peanuts are produced 
annually in the county, and about 70 per cent of the crop is hauled 
to Petersburg by wagon, an average distance of about 10 miles. 
There are also produced in the county about 3,368,000 pounds of 
tobacco a year, of which about 80 per cent is hauled to Petersburg 
by wagon, an average distance of about 15 miles. These two crops 
require considerable fertilizer, which is hauled from Petersburg to 
the farm. As an indication of the volume of traffic 1t may be men- 
tioned that the Atlantic Coast Line Railroad at Petersburg handled 
outgoing shipments in 1911 amounting to 25,364 tons, and it 1s esti- 
mated that this railroad carried about one-third of the incoming and 
outgoing shipments at Petersburg. Not more than one-half of the 
incoming and outgoing shipments at this pomt, however, pass over - 
the improved roads of Dinwiddie County, as the other half originates 
in or is consigned to Petersburg and to the adjacent counties of Ches- 
terfield and Prince George. It is estimated that in addition to the 
traffic centering at Petersburg, about 60,000 tons of miscellaneous 
and forest products are hauled to way stations over the improved 
roads for an average distance of about 5 miles. 
In order to obtain further data on which to estimate the total 
annual traffic passing over the bond-built roads to the market or 
shipping point at Petersburg, four traffic censuses were taken on 
the Halifax and Cox Roads, covering a period of one year. Practi- 
cally all the hauling from Dinwiddie County to Petersburg concen- 
trates on these two roads within 2 miles from town. The census 
on the Cox Road was obtained’about 1? miles from Petersburg and 
on the Halifax road about 1 mile from Petersburg. The census 
periods included a week in March, a week in July, two weeks in 
December, 1914, and a week in April, 1915. The weekly census 
included Sundays, and the two weeks’ census excluded Sundays. 
Table 13 is based on the results of these censuses. 
