Proyecto Sistemas De Transporte.

UNIVERSIDAD ANAHUAC

MÉXICO NORTE

ENGINEERING FACULTY

Final Project

Transportation Systems

Presenting:

Daniel Gil

Santiago González

Adrian Rodríguez

Professor:

Eng. José Antonio Tena Colunga

HUIXQUILUCAN, EDO. DE MEXICO December 2014

• PROBLEM DEFINITION:

The team encountered a problem in the intersection between “Periférico” and “Calzada Legaria”, this cross has the problem of 4 light shifts in a really heavy transited area, and it takes long time to achieve the crossing in the mentioned intersection generating a high TDPA.

• STUDY AREA DELIMITATION

The study zone is in Miguel Hidalgo Delegation in Mexico City (DF) and concretely the intersection between Periférico and Calzada Legaria. The colonies that are in this area are:

Lomas de Sotelo

Mexico City, DF.

Loma Hermosa

Mexico City, DF.

Irrigación

Mexico City, DF.

• STUDY AND ANALYSIS OF THE PROBLEM.

• Traffic images in peak hours.

o The images shown below this text are in the hours that are known to be peak hours, or, in another words when the traffic is the heaviest. They are screenshots of Google Maps app and they have indicated the day and hour.

Monday 19:00 hrs.

Tuesday 19:00 hrs.

Wednesday 19:00 hrs.

Thursday 19:30 hrs.

Friday 16:00 hrs.

Saturday and Sunday: the traffic is fluent.

The Mexico City government declared that in 2013 the city had a traffic load that was below the 39% in Saturdays and 44% in Sundays(*PONER LINK). These values are taken from census made by the mentioned government and they are an average that depends on traffic loads that had taken place in different months and weeks, because in holidays and non-working days the data tend to be very irregular.

Data Information

In the next tab we show the average speed for the 24 hours of the 7 days of the week.

Graphs

Speed daily

Average speed per day

Distance

As we can see in the next map the traffic jam is of 533m.

Flow Rate

In 533 meters fit 107 vehicles per lane, considering vehicles of 5 meters.

The avenue has 3 lanes so we have a total capacity of 321 vehicles.

Time= distance/speed = (533 m/0.20 m/s) = 2665 seconds = 44.5 minutes

With an average speed of 0.72 km/h it takes 44.5 minutes to these 321 vehicles to pass through the intersection, so in 1 hour 432 cars would cross.

The flow rate is:

Vp = (432/3lanes) = 144 pcphpl

Now we can calculate the density with the following equation:

D = vp/S = (144/3.6) = 200 pc/km/ln

Where

D = density (pc/km/ln),

vp = flow rate (pcphpl), and

S = average passenger-car speed (km/hr).

After reuniting the necessary information, the average speed was calculated in hours a day (24 hrs) from Monday to Friday.

Legaria Avenue Periferico Avenue

Northeast-southwest Southwest-northeast North-south South-north

Density 739 752 Density 862 783

Speed 5.3 4.9 Speed 6.6 9.6

The traffic in peak hours is slower because of the great increment in vehicle flow density. Further in this section is shown the average in peak hours a day, from Monday to Friday.

Legaria Avenue Periferico Avenue

Northeast-southwest Southwest-northeast North-south South-north

Density 913 1026 Density 974 902

Speed 0.72 0.72 Speed 5.3 6.4

In order to obtain the vehicles/lane/hour, it’s necessary to divide the density between the lanes of each Avenue.

Legaria Avenue Periferico Avenue

Northeast-southwest Southwest-northeast North-south South-north

Veh/ln/hr 304 513 Veh/ln/hr 487 451

The level of service, taking into account speed and vehicles per hour is:

• Cross Level of Service: E

• Peak hour Level of Service: F

Actual

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