Unformatted text preview: 2/13/2019
NUMBER OF LANES
SAMPLE PROBLEM/S:
The basic task in designing highways is the
determination of the number of lanes needed to
1. A proposed highway is to be designed with
meet the given design volume under a specified
adequate shoulder clearance in a level of terrain
LOS.
with the following:
AADT= 40 000 pcu/day
The procedure may follow trial and error. Thus, the
D = 65%
anumber of lanes is initially assumed. (validate
K= 98
"assumption from the corresponding capacity
Estimate the number of lanes that will
obtained from the table of values.)
provide LOS B.
2. Five vehicles were traversing a 2- km
highway and the following data were take:
TIME (min)
1. 8
1.4
1 . 6
1. 5
1 . 3
#) Find the density of traffic in veh/km.
Find the space mean speed in kph.
Compute the time mean speed in kph....
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- Spring '15
- deguzman
