Traffic&Pedestriansurveys

8/12/2019 Traffic&Pedestriansurveys

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TRAFFIC FLOW SURVEYS

This is a simple count of how many ehicles pass a pa!ticula! point"

#!oup the ehicles into types an$ use a !eco!$in% sheet as they pass &y"

You can a!y the su!ey in a num&e! of ways'• #et a total t!affic count passin% a pa!ticula! point"

• Count the t!affic flow %oin% in each $i!ection at that point"

• Su!ey t!affic at one place at $iffe!ent times of the $ay( compa!e ea!ly mo!nin%

!ush)hou! t!affic flow with mi$)afte!noon t!affic flow"

• Su!ey t!affic in see!al places at the same time of the $ay"

• *eci$e to concent!ate on so)calle$ t!affic t!ou&le spots +con%estion , acci$ent

&lac- spots.

You can also un$e!ta-e some supplementa!y su!eys at the same time"• Su!ey the ca! occupancy !ate of all ca!s that pass" This can &e useful to assess the

potential fo! ca! poolin% an$ cuttin% t!affic con%estion

• Cone!t all t!affic $ata to /assen%e! Ca! Units +/CUs." This %ies a mo!e accu!ate

in$ication of t!affic leels than a !aw count" A ca! has a /CU of 0 while a &us has a

/CU of 12 in$icatin% that it ta-es up th!ee times the amount of !oa$ space as a ca!"

• *iffe!ent !oa$s can cope with $iffe!ent olumes of t!affic" Test how &usy a !oute

is &y compa!in% you! t!affic flow !esults with the In$e3 of Satu!ation" This mi%ht

in$icate that a !oa$ has !eache$ satu!ation leel an$ a &y)pass is nee$e$"

• 4ou!ney %ene!ato! issues can &e su!eye$" Ce!tain sites2 such as schools2 facto!ies

an$ shoppin% cent!es %ene!ate heay t!affic" T!affic flow coul$ &e counte$ at a

pa!ticula! site at ce!tain times th!ou%hout the $ay" This type of su!ey coul$ also

&e un$e!ta-en &y issuin% 5uestionnai!es to stu$ents an$ hain% them complete$ &y a

pa!ent"

Two options he!e' fo! a simple su!ey as- !espon$ents to select up to fou! !easons

O! 2 fo! mo!e $etaile$ $ata2 as- them to !an- them in o!$e!"

• 6uantify $elay times fo! 7ou!neys on a pa!ticula! !oute" Select th!ee o! fou! points

alon% a !oute" *!ie this section of !oute at a time when flow is f!ee2 notin% the

time ta-en fo! each st!etch"On the $ay of the su!ey2 $eci$e on a ce!tain ca! mo$el of ca! to focus on" The

su!eyo! shoul$ note its !e%ist!ation an$ the time at which it passe$ that point"

This shoul$ &e !epeate$ at each point alon% the su!ey" In this way the time ta-en

fo! each section of the 7ou!ney can &e calculate$"

• The su!ey coul$ &e e3pan$e$ if su!ey points we!e locate$ on &!anch !oa$s !athe!

than &ein% confine$ to one !oute" 8y $oin% this2 a patte!n of 7ou!neys un$e!ta-en

can &e $eelope$"



TRAFFIC , /E*ESTRIA9 RECOR*I9# S:EET

LOCATIO9 9A;E

TI;E *ATE

/E*ESTRIA9S TOTAL

LAR#E TRUC<S

= LORRIES

TOTAL /CU

3 1

COAC:ES =

8USES

TOTAL /CU

3 1

S;ALL TRUC<S

;I9I8USES

TOTAL /CU

3 >

CARS,VA9S

TOTAL /CU

3 0

;OTORCYCLES

, 8ICYCLES

TOTAL /CU

? "@

/CU

TOTAL

Cone!sion to /CU,h!

I9*E? OF SATURATIO9 +in /CUs pe! hou!.

This will %ie a measu!ement of how con%este$ a !oa$ is"

O!$ina!y two lane !oa$ @B *ual ca!!ia%eway 1BBB

Th!ee lane !oa$ +cent!al oe!ta-in%. 0BB ;oto!way +1 lanes each way. DBBB



4OUR9EY #E9ERATOR 6UESTIO99AIRE

Which of the followin% facto!s most st!on%ly influence you! $ecision to t!ael to

wo!- &y ca!

I $o not no!mally t!ael to wo!- &y ca!"

Conenient an$ secu!e pa!-in% is aaila&le"

I encounte! little con%estion o! $elay on the 7ou!ney"

The ca! is essential fo! the wo!- I $o"

I nee$ the ca! to $!op,collect chil$!en at school

I nee$ the ca! fo! shoppin% &efo!e o! afte! wo!-"

I hae a ca! poolin% a!!an%ement with a collea%ue

/u&lic t!anspo!t is not a ia&le option &ecause

)pu&lic t!anspo!t stops a!e not close to my home , wo!-place"

)the timeta&le , f!e5uency of pu&lic t!anspo!t $oes not suit"

)is is too e3pensie"

)I $ont li-e pu&lic t!anspo!t"

)pu&lic t!anspo!t is too c!ow$e$"

)pu&lic t!anspo!t is un!elia&le"

I en7oy $!iin% an$ listenin% to the !a$io , music as I t!ael"

I feel safe! in my own ca!

Any othe! !eason



/RESE9TI9# YOUR RESULTS

Use a t!en$ %!aph to p!esent t!affic flow a!iations oe! time"

Traffic Flow

0

20

40

60

80

100

120

8am 10am 12 noon 2pm 4pm 6pm 8pm

Time

P C U s Main Street

High Street

Use a se!ies of &a! cha!ts to show t!affic a!iations on $iffe!ent $ays"

0

50

100

150

200

250

300

PCUs

Monday Tuesday Wednesday Thursday Friday Saturday Sunday

Day

PCUs at Broad Street



Use a pie)cha!t to show /CU &!ea-$own

Use $ii$e$ !ectan%les to show

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Traffic&Pedestriansurveys