
The LOS,

Answer to Problem 18P
The level of service is
Explanation of Solution
Given:
Base free flow speed is
Lane width is
Shoulder width is
Access points per mile is
Formula used:
Write the expression to calculate the value of
Here,
Write the expression for peak
Here,
Write the expression to calculate the base percent time spent following.
Here,
Write the expression to calculate the percent time following.
Here,
Write the expression to calculate the free flow speed.
Here,
Write the expression to calculate the average travel speed.
Here,
Write the expression to calculate the volume to capacity ratio.
Here,
Write the expression to calculate the total number of vehicle miles during
Here,
Write the expression to calculate the number of vehicle miles during the peak hour.
Write the expression to calculate the total travel time in peak
Calculation:
Refer table 9.5, "Passenger car equivalents for trucks and RV's to determine the percent time spent following on two way and directional segments.
The value of
The value of
Substitute
Substitute
Substitute
Refer table 9.3, "Adjustment for combined effect of directional distribution of traffic and percentage of no passing zones on percent time spent following on two way segments.
The value of
Substitute
Substitute
Refer table 9.6, "Adjustment for effect of no passing zones on average travel speed on two way segments".
The value of
Substitute
Refer table 9.1, "Level of service criteria for two lane highways in class I.
The value of
Substitute
Substitute
Substitute
Substitute
Conclusion:
Therefore, the level of service is
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Chapter 9 Solutions
Traffic And Highway Engineering
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