High way and Transportation 2(Lab) LCIV 3034

Instructor : Prof. Dr. Shafik Jendia Assistant : Eng.Mustafa abou foul

TEXT BOOKS

1- . - د الهندسي التصميم الطرق هندسةغزة – اإلسالمية الجامعة جندية شفيق

2 . - د- اإلنشائي التصميم الطرق هندسةغزة – اإلسالمية الجامعة جندية شفيق

Grading System

Lab +Project and Assignment + Midterm Exam

30 % - 40%

Final Exam 60 % - 70%

LABORATORY WORK OUTLINE

1- Project: Geometric design of highway.

2- Laboratory experiments.

3- Discussion. (If required).

INTRODUCTION Transportation

Movement of personsand goods over space

Transportation Demand People and goods do not move for the

sake of movement, but to fulfill certain needs.

Mobility must be provided efficiently, by balancing different society needs (cost, convenience, safety, environment protection).

الهندسى التصميم بين الفرق هو ماللطريق؟ واالنشائي

الهندسي عدد: التصميم بتحديد يهتم الذي التصميم هوالطرق مقاطع تصميم وكذلك الطريق مسارب وعرض

. والعرضية والرأسية االفقية

اإلنشائى بتحديد: التصميم يهتم الذي التصميم هوطبقة كل وسماكة للطريق المناسبة الرصف طبقات

الرصفة علي المرور حجم مع يتناسب بما رصف. الرصف مادة وخواص

Definition Speed: Rate of motion(mph, km/hr). There are three types of speed:

Spot speed ( لحظية (سرعة

It is the instantaneous speed of a vehicle at a specific location.

Running speed The average speed maintained over a given route

while the vehicle is in motion. Average Journey Speed

Distance traveled divided by the total time taken to complete the distance.

Definition

Volume, Flow: The total number of vehicles that pass over a given point of high way during specific time interval.

Rate of flow: the equivalent hourly rate at which vehicles pass over a given point of highway during given time period less than 1hour, usually 15min

Definition Peak hour factor (PHF): the ratio of total hourly volume to the

maximum 15-minute rate of flow within the hour.

PHF (minimum) = 0.25 ( V = V ساعة ربع في تمر المركبات 15كل ) PHF (maximum) = 1 ( V=4V15 بالتساوي األرباع علي موزعة المركبات

( Steady flow.

Example:

The following traffic counts were made during an hour-long

study period:Time

periodNumber of

vehicle (veh)

5:00 –5:15 1000

5:15 –5:30 1200

5:30 –5:45 1100

5:45 –6:00 1000

Answer:The hourly volume = 1000+1200+1100+1000 = 4300 vehThe rates of low = [ No. of veh.] / [time(in hours)]

Time period Number of vehicle (veh)

Rate of flowvph

5:00 –5:15 1000 1000/0.25 = 4000

5:15 –5:30 1200 1200/0.25 = 4800

5:30 –5:45 1100 1100/0.25 = 4400

5:45 –6:00 1000 1000/0.25 = 4000

Definition Density, concentration: (K,D): the number of

vehicles occupying a given length of highway at a given instant. (Veh/km). لحظة في الشارع من معين طول في الموجودة السيارات عدد

معينة

LOS Level of Service: LOS is a qualitative

measure that describes operational conditions within a traffic stream and their perception by drivers or / and passengers.

Level of service has six levels, the first one is A, and the worst one is F.

ADT VS AADT ADT (average daily traffic): the average of 24hour

counts collected over a number of days greater than 1day and less than 1-year

األيام / هذه عدد سنة من أقل أيام عدة خالل السيارات مجموع

AADT (average annual daily traffic): the average of 24-hour counts collected over a year.

It is used to:1- Study The accidents and obstacles.2- Design and evaluation of highway.3- Study the benefits that may come from the road.

Number of Lanes