Guide for Traffic Volume Counting Manual, Volume 2The Bureau, 1965 - 43 pages |
Autres éditions - Tout afficher
Guide for Traffic Volume Counting Manual United States. Bureau of Public Roads Affichage du livre entier - 1963 |
Guide for Traffic Volume Counting Manual, Volume 2 United States. Bureau of Public Roads Affichage du livre entier - 1965 |
Guide for Traffic Volume Counting Manual, Volume 2 United States. Bureau of Public Roads Affichage du livre entier - 1965 |
Expressions et termes fréquents
ADT estimates applied to coverage April May June areas assigned August September October average weekday traffic bibliography item central business district chi square tests compute continuous count recorders continuous count stations Control Station Operations count station locations counting traffic counts are taken coverage count stations determined error of estimate estimates of ADT estimates of traffic four-hour group mean factor groups of similar highway intersecting roads July August September June July August Locate coverage count low-volume roads low-volume streets manual counts mechanical efficiency month monthly adjustment factors monthly factor monthly traffic volume monthly variations necessary patterns of monthly percent in error period of count procedure ratio Refer to bibliography Richardsville road sections Roads with ADT route sample seasonal control stations short counts shown on table standard deviation standard error station at alternate statistical populations tinuous count stations variations of traffic volume of traffic volume streets weekday traffic volume
Fréquemment cités
Page iv - The purpose of this guide is to provide efficient procedures for making accurate estimates of annual average daily traffic (ADT) volumes based on sample counts. ADT is a fundamental traffic measurement needed for the determination of vehicle-miles of travel on the various categories of rural and urban highway systems. ADT values for specific road sections provide the highway engineer, planner, and administrator with essential information needed for the determination of design standards, the systematic...
Page 20 - It was found that the normal traffic volumes on weekdays could be considered the same as the ADT without the application of adjustment factors.
Page 3 - It should be noted that adjustment factors are in terms of average weekday traffic. Coverage counts are usually made on weekdays; when Saturday and Sunday are included only the weekday counts should be used for estimating APT.
Page 8 - The pattern of monthly variations of traffic volume persists over long stretches of highway. 2. The pattern of monthly variations of traffic volumes persists over long periods of time.
Page 1 - The major premise of the suggested procedure for high-volume roads is the establishment of a series of routes with consecutive road sections having similar patterns of monthly traffic volume variation.
Page 11 - ADT can generally be represented by one group, for the purpose of computing monthly adjustment factors to obtain estimates of ADI for these low volume roads.
Page i - It consecutive hours that pass a particular point on the road over the period of 365 days.
Page 2 - ... factors. In other words, the criterion of grouping is a subjectively and arbitrarily chosen value of ±0.10 from the assumed mean. The final grouping of counters in this method is supposed to be such that all or as many as possible of the same counters would fall into the same group for each of the months.
Page 9 - In general, a minimum of four continuous counting stations should be located in each group of road sections with an independent set of monthly factors.
Page 9 - In a comprehensive traffic volume survey, information is needed for each section of road between intersections.