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Transportation Engineering Problems

This document contains information about transportation engineering concepts like spot speed, space mean speed, time mean speed, and examples of problems calculating these values from datasets. It includes 7 practice problems calculating speeds, accident rates, and traffic from tables of vehicle times, distances, speeds, and accident/traffic data. The purpose is to teach concepts and skills for analyzing transportation data.

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Louisky Regaspi
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111 views11 pages

Transportation Engineering Problems

This document contains information about transportation engineering concepts like spot speed, space mean speed, time mean speed, and examples of problems calculating these values from datasets. It includes 7 practice problems calculating speeds, accident rates, and traffic from tables of vehicle times, distances, speeds, and accident/traffic data. The purpose is to teach concepts and skills for analyzing transportation data.

Uploaded by

Louisky Regaspi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Transportation

Engineering
TRANSPORTATION ENGIINEERING
Spot Speed

The instantaneous speed of a vehicle


at a specified section or location.

CAMARINES SUR POLYTECHNIC COLLEGES


TRANSPORTATION ENGIINEERING
Space Mean Speed
The average speed of all vehicles
occupying a given section of a highway
over a specified time period.
Time Mean Speed
The average speed of all vehicles
passing a point on a highway over a
specified time period.

CAMARINES SUR POLYTECHNIC COLLEGES


Length
TRANSPORTATION ENGIINEERING
Problem 1:
The following data were taken on five vehicles
travelling a 1.5 km portion of the NLEX.
a) Determine the space mean speed in kph.
b) Determine the time mean speed in kph.
Vehicles Time (minute)

1 1.2

2 1.0

3 1.4

4 1.3

5 1.1
CAMARINES SUR POLYTECHNIC COLLEGES
TRANSPORTATION ENGIINEERING
Problem 2:
From the following data of a freeway surveillance, there are 5 vehicles
under observation and the following distances are the distance each
vehicle had travelled when observed every 2 sec. Determine the space
mean speed in kph.
Vehicles Distance, S (m)

1 24.4

2 25.8

3 24.7

4 26.9

5 22.9

CAMARINES SUR POLYTECHNIC COLLEGES


TRANSPORTATION ENGIINEERING
Problem 3:
The following data were obtained from a freeway surveillance of 5
vehicles passing through a certain point of the freeway with the
individual spot speeds.
a) Determine the time mean speed in kph.
b) Determine the space mean speed in kph.
Spot Speed
Vehicles
(kph)
1 41.08

2 48.51

3 50.64

4 46.82

5 44.14
CAMARINES SUR POLYTECHNIC COLLEGES
TRANSPORTATION ENGIINEERING
Problem 4:
The number of accidents in 6 years recorded in a
certain section of a highway is 2,456. If the accident
rate is 1,420 per million entering vehicles, what is the
average daily traffic (ADT)?

CAMARINES SUR POLYTECHNIC COLLEGES


TRANSPORTATION ENGIINEERING
Problem 5:
It is observed that 50 traffic accidents occurred on a
20-mile long section of Route 7 in one year. If the
average daily traffic on the section was 5500 vehicles,
determine the rate of fatal accidents per 100 million
vehicles-miles if 6% of the accidents involved fatalities.

CAMARINES SUR POLYTECHNIC COLLEGES


TRANSPORTATION ENGIINEERING
Problem 6:
The average daily traffic entering España – Governor
Forbes intersection is 27000. If the accident rate is
8945 per million entering vehicles (MEV), find the total
number of accidents in 4 years.
a. 352 612 c. 342 612
b. 332 612 d. 322 612

CAMARINES SUR POLYTECHNIC COLLEGES


TRANSPORTATION ENGIINEERING
Problem 7:
A 10 km long portion of the North Luzon Expressway and Meycauayan
had the following reported accidents.
Find the accident rate for the given Year Fatal Injury Property
Damage
Ave. Daily
Traffic
Period (i.e. 4 years) in HMVM 2000 3 21 120 27000

(Hundred Million Vehicle – Miles). 2001 5 40 240 25000


2002 4 55 185 29000
a. 382.2 2003 6 72 211 30000
b. 372.2 total 18 188 756

c. 362.2
d. 352.2

CAMARINES SUR POLYTECHNIC COLLEGES

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