FHWA - Traffic Monitoring Data Format (Chp 6) 2001

8/10/2019 FHWA - Traffic Monitoring Data Format (Chp 6) 2001

1/24

Section 6 Traffic Monitoring Guide

May 1, 2001

Section 6

Traffic Monitoring Data

Formats


2/24


May 1, 2001

SECTION 6

TRAFFIC MONITORING DATA FORMATS

Section Page

CHAPTER 1INTRODUCTION..............................................................................6-1

Traffic Data Records...........................................................................................6-1

Data Submittals to the FHWA.............................................................................6-

CHAPTER 2STATION DESCRIPTION DATA FORMATS................................6-3

CHAPTER 3TRAFFIC VOUME DATA FORMATS.......................................6-12

CHAPTER !VEHICE CASSIFICATION DATA FORMATS......................6-1"

CHAPTER "TRUC# $EIGHT DATA FORMATS...........................................6-1%

TA&ES

Table Page

6--1 Station Descri!tion Record...........................................................................6-"6-#-1 Hourl$ Traffic %olume Record &'# Record(...............................................6-1"

6-"-1 %ehicle )lassification Record.....................................................................6-1*

6-+-1 Truc, Weight Record..................................................................................6-

6-ii


3/24


May 1, 2001

CHAPTER 1

INTRODUCTION

TRAFFIC DATA RECORDS

This section contains instructions for coding data in the formats reuested b$ the

FHWA. The record formats and coding instructions ha/e been de/elo!ed to !ro/ide

in!ut to national databases maintained b$ the FHWA. These include the Traffic %olume

Trends &T%T( s$stem and the %ehicle Tra/el 0nformation S$stem &%TR0S(.

The T%T s$stem is used to !rocess the continuous traffic /olume data and!roduce the monthl$ Traffic %olume Trends re!ort. The %TR0S is used to !rocess the

/ehicle classification and truc, eight data collected as !art of the annual Truc, Weight

Stud$. 2oth are microcom!uter database management s$stems that !rocess3 /alidate3

summari4e3 and maintain traffic data. T%T and %TR0S ma$ be used b$ an$one ith datain the formats described in this section and can be retrie/ed from the FHWA ebsite at

htt!5.fha.dot.go/ohimt/tt/t!age.htm. The data collection !rogram has been

a!!ro/ed b$ the 7ffice of Management and 2udget3 7M2 ' 1+-+*83 and has acurrent e9!iration date of A!ril #3 ".

The data records are di/ided into four t$!es5 station descri!tion data3 traffic

/olume data3 /ehicle classification data3 and truc, eight data. :ach t$!e of data has its

on indi/iduali4ed record format. S!ecific coding instructions and record la$outs arediscussed se!aratel$ for each t$!e of data in the folloing cha!ters.

;ote that some fields are labeled ustified and filled ith leading blan,s or 4eros unless notedotherise. For numeric fields ith missing or ina!!licable data3 enter blan,s or ?-1?

right->ustified.

)ertain data items are common to all four t$!es of records. For e9am!le3 all

records contain a si9-character station identification. This allos States to use a common

identification s$stem for all traffic monitoring stations.

Se/eral fields in the station descri!tion record ere re!laced ith fields that are

needed to tie traffic data to geogra!hic information s$stems &@0S(. This ill allo trafficdata to be o/erlaid on the ;ational Higha$ lanning ;etor, &;H;( and similar

s$stems.

6-1


4/24


May 1, 2001

DATA SU&MITTAS TO THE FH$A

)o!ies of continuous traffic /olume data collected b$ !ermanent ATRs should besubmitted monthl$ to the FHWA ithin da$s after the close of the month for hich the

data ere collected. The station descri!tion record need onl$ be sent annuall$ or henthere is a change. The !referred method of transmission is as an attachment to an e-mail

message sent to


5/24


May 1, 2001

CHAPTER 2

STATION DESCRIPTION DATA FORMATS

The Station Descri!tion record format is used for all traffic /olume3 /ehicle

classification3 and truc, eight monitoring stations. A Station Descri!tion file contains

one record for each traffic monitoring station !er $ear. All fields are considered to be

character fields. The o!tional file naming con/ention is ?ss$$.STA?3 here ss is state!ostal abbre/iation and $$ is the last to digits of the $ear. Table 6 --1 summari4es the

Station Descri!tion record.

Fields designated as Criticalare reuired for entr$ into the %TR0S database.

1. Reco() T8e&)olumn 1( - Critical

S E Station descri!tion record

. FIPS St'te Co)e&)olumns -#( - Critical

State )ode State )ode State )odeAlabama 1 ouisiana 7hio #G

Alas,a Maine # 7,lahoma "

Ari4ona " Mar$land " 7regon "1

Ar,ansas + Massachusetts + enns$l/ania ")alifornia 6 Michigan 6 Rhode 0sland ""

)olorado * Minnesota 8 South )arolina "+

)onnecticut G Mississi!!i * South Da,ota "6

Delaare 1 Missouri G Tennessee "8D.). 11 Montana # Te9as "*

Florida 1 ;ebras,a #1 tah "G

@eorgia 1# ;e/ada # %ermont +

Haaii 1+ ;e Ham!shire ## %irginia +10daho 16 ;e Berse$ #" Washington +#

0llinois 18 ;e Me9ico #+ West %irginia +"

0ndiana 1* ;e Ior, #6 Wisconsin ++

0oa 1G ;orth )arolina #8 W$oming +6Cansas ;orth Da,ota #* uerto Rico 8

Centuc,$ 1

)anadian ro/inces ma$ use %TR0S ith the folloing codes &based on the T(5

Alberta *1 2ritish )olumbia * abrador G#

Manitoba *# ;e 2runsic, *" ;efoundland *+;orthest Ter. G ;o/a Scotia *6 ;una/ut G"

7ntario *8 rince :dard 0s. ** Juebec *GSas,atchean G Iu,on G1

6-#


6/24


May 1, 2001

T'90e 6-2-17 St'tion Dec(i8tion Reco()

Fie0) Co04n $i)t, Dec(i8tion

1 1 1 Record T$!e -# F0S State )ode

# "-G 6 Station 0D

" 1 1 Direction of Tra/el )ode+ 11 1 ane of Tra/el

6 1-1# Iear of Data

8 1"-1+ Functional )lassification )ode* 16 1 ;umber of anes in Direction 0ndicated

G 18 1 Sam!le T$!e for Traffic %olume

1 1* 1 ;umber of anes Monitored for Traffic %olume

11 1G 1 Method of Traffic %olume )ounting

1 1 Sam!le T$!e for %ehicle )lassification1# 1 1 ;umber of anes Monitored for %ehicle )lass.

1" 1 Method of %ehicle )lassification1+ # 1 Algorithm for %ehicle )lassification

16 "-+ )lassification S$stem for %ehicle )lassification

18 6 1 Sam!le T$!e for Truc, Weight1* 8 1 ;umber of anes Monitored for Truc, Weight

1G * 1 Method of Truc, Weighing

G 1 )alibration of Weighing S$stem

1 # 1 Method of Data Retrie/al #1 1 T$!e of Sensor

# # 1 Second T$!e of Sensor " ## 1 rimar$ ur!ose -NEW+ #"-"+ 1 RS 0dentification -NEW

6 "6-+1 6 RS ocation oint -NEW

8 +-+G * atitude -NEW* 6-6* G ongitude -NEW

G 6G-8 " SHR Site 0dentification -NEW

# 8#-8* 6 re/ious Station 0D#1 8G-* Iear Station :stablished

# *1-* Iear Station Discontinued

## *#-*+ # F0S )ount$ )ode

#" *6 1 HMS Sam!le T$!e#+ *8-G* 1 HMS Sam!le 0dentifier

#6 GG 1 ;ational Higha$ S$stem -NEW

#8 1 1 osted Route Signing#* 11-1* * osted Signed Route ;umber

#G 1G 1 )oncurrent Route Signing

" 11-118 * )oncurrent Signed Route ;umber "1 11*-168 + Station ocation

6-"


7/24


May 1, 2001

#. St'tion I)enti+ic'tion&)olumns "-G( - Critical

This field should contain an al!hanumeric designation for the station here the sur/e$

data are collected. Station identification field entries must be identical in all records for a

gi/en station. Differences in characters3 including s!aces3 blan,s3 h$!hens3 etc.3 !re/ent

!ro!er match. Right >ustif$ the Station 0D if it is less than 6 characters. There should beno embedded blan,s.

". Di(ection o+ T('/e0 Co)e&)olumn 1( - Critical

Do not combine directions. There should be a se!arate record for each direction.

Whether or not lanes are combined in each direction de!ends on the ne9t field.

)ode Direction

1 ;orth

;ortheast

# :ast" Southeast

+ South6 Southest

8 West* ;orthest

G ;orth-South or ;ortheast-Southest combined &ATR stations onl$(

:ast-West or Southeast-;orthest combined &ATR stations onl$(

+. 'ne o+ T('/e0&)olumn 11( - Critical

:ither each lane is considered a se!arate station or all lanes in each direction are

combined.

)ode ane Data ith lanes combined

1 7utside &rightmost( lane

-G 7ther lanes

Note: The Station ID, Direction of Travel, and Lane of Travel make up the Station

Code. There hould be one Station !ecri"tion record "er Station Code# Station can beeither by lane or $ith lane co%bined by direction, but not both#

6. :e'( o+ D't'&)olumns 1-1#( - Critical

)ode the last to digits of the $ear in hich the data ere collected.

6-+


8/24


May 1, 2001

8. F4nction'0 C0'i+ic'tion Co)e&)olumns 1"-1+( - Critical

)ode Functional )lassificationRRA

1 rinci!al Arterial - 0nterstate

rinci!al Arterial - 7ther

6 Minor Arterial 8 Ma>or )ollector

* Minor )ollector

G ocal S$stem

R2A;

11 rinci!al Arterial - 0nterstate

1 rinci!al Arterial - 7ther Freea$s or :9!ressa$s

1" rinci!al Arterial - 7ther 16 Minor Arterial

18 )ollector

1G ocal S$stem

*. N49e( o+ 'ne in Di(ection In)ic'te)&)olumn 16(

)ode the number of lanes in one direction at the site. se ?G? if there are more than eight

lanes.

G. S'80e T8e +o( T('++ic Vo04e&)olumn 18(

T E Station used for Traffic %olume Trends

; E Station not used for Traffic %olume Trends

1. N49e( o+ 'ne Monito(e) +o( T('++ic Vo04e&)olumn 1*(

)ode the number of lanes in one direction that are monitored at this site. se ?G? if thereare more than eight lanes.

11. Met,o) o+ T('++ic Vo04e Co4ntin&)olumn 1G(

1 E Human obser/ation &manual(

E ortable traffic recording de/ice# E ermanent automatic traffic recorder &ATR(

1. S'80e T8e +o( Ve,ic0e C0'i+ic'tion&)olumn (

H E Station used for Hea/$ %ehicle Tra/el 0nformation S$stem

; E Station not used for Hea/$ %ehicle Tra/el 0nformation S$stem

1#. N49e( o+ 'ne Monito(e) +o( Ve,ic0e C0'i+ic'tion&)olumn 1(

)ode the number of lanes in one direction that are monitored for /ehicle classification atthis site. se ?G? if there are more than eight lanes.

6-6


9/24


May 1, 2001

1". Met,o) o+ Ve,ic0e C0'i+ic'tion&)olumn (

1 = Human observation (manual) vehicle classification

2 = Portable vehicle classification device

3 = Permanent vehicle classification device

1+. A0o(it, +o( Ve,ic0e C0'i+ic'tion&)olumn #(

)ode the t$!e of in!ut and !rocessing used to classif$ /ehicles5

A E Human obser/ation on site &manual(

2 E Human obser/ation of /ehicle image &e.g.3 /ideo(

) E Automated inter!retation of /ehicle image or signature &e.g.3 /ideo3 microa/e3 sonic(

D E %ehicle length classification: E A9le s!acing ith ASTM Standard :1+8

F E A9le s!acing ith Scheme F

@ E A9le s!acing ith Scheme F modified

H E 7ther a9le s!acing algorithmC E A9le s!acing and eight algorithm

E A9le s!acing and /ehicle length algorithmM E A9le s!acing3 eight3 and /ehicle length algorithm

; E A9le s!acing and other in!ut&s( not s!ecified abo/e E 7ther means not s!ecified abo/e

16. C0'i+ic'tion Ste +o( Ve,ic0e C0'i+ic'tion&)olumns "-+(

This indicates the total number of classes in the /ehicle classification s$stem. The default

/alue is 1# hich indicates the standard FHWA 1# class s$stem &see A!!endi9 "-)(. Theother /ehicle classification s$stems are based on the HMS and the Traffic Monitoring

S$stem &TMS( documentation. The /alue that is used ill determine the number of count

fields needed on the %ehicle )lassification Record. 0n the folloing list the numbers in!arentheses are from the FHWA 1# class s$stem5

1 E 7ne class5 total /olume

E To classes5 non-commercial &classes 1-#( and commercial &classes "-1#( /ehicles# E Three classes5 non-commercial &classes 1-#(3 single-unit commercial &classes "-8(3 combination

commercial &classes *-1#( /ehicles

" E Four classes5 non-commercial &classes 1-#(3 single-unit commercial &classes "-8(3 single-trailer

commercial &classes *-1(3 multi-trailer commercial &classes 11-1#( /ehicles+ E Fi/e classes as follos5

1 of + E to-a9le3 to or four-tire /ehicles &classes 1-#(

of + E buses &class "(# of + E single-unit truc,s &classes +-8(

" of + E single-trailer combination truc,s &classes *-1(

+ of + E multi!le-trailer combination truc,s &classes 11-1#(

1# E FHWAKs standard 1# class s$stem &see A!!endi9 "-)(1" E FHWAKs 1# class s$stem !lus a class 1" &State or /endor defined(

1+ E FHWAKs 1# class s$stem !lus classes 1" and 1+ &State or /endor defined(

7ther numbers E number of classes &unsu!!orted(

6-8


10/24


May 1, 2001

18. S'80e T8e +o( T(4c; $ei,t&)olumn 6(

2 E Station used for TM@ sam!le and Strategic Higha$ Research rogram &SHR( ong Term

a/ement erformance &T( sam!le E Station used for SHRT sam!le &but not TM@ sam!le(

T E Station used for TM@ sam!le &but not SHRT sam!le(

; E Station not used for an$ of the abo/e

1*. N49e( o+ 'ne Monito(e) +o( T(4c; $ei,t&)olumn 8(

)ode the number of lanes in one direction that are monitored for truc, eight at this site.

se ?G? if there are more than eight lanes.

1G. Met,o) o+ T(4c; $ei,in&)olumn *(

1 E ortable static scale

E )hassis-mounted3 toed static scale# E latform or !it static scale

" E ortable eigh-in-motion s$stem+ E ermanent eigh-in-motion s$stem

. C'0i9('tion o+ $ei,in Ste&)olumn G(

)ode the method used to calibrate the eighing s$stem3 e.g.3 com!aring eight-in-motion and eights from static scales.

A E ASTM Standard :1#1*2 E Subset of ASTM Standard :1#1*

) E )ombination of test truc,s and truc,s from the traffic stream &but not ASTM :1#1*(

D E 7ther sam!le of truc,s from the traffic stream

M E Mo/ing a/erage of the steering a9le of #SsS E Static calibration

T E Test truc,s onl$

E ncalibrated

E 7ther method

1. Met,o) o+ D't' Ret(ie/'0&)olumn #(

1 E ;ot automated &manual( E Automated &telemetr$(

6-*


11/24


May 1, 2001

. T8e o+ Seno(&)olumn #1(

)ode the t$!e of sensor used for traffic detection.

A E Automatic /ehicle identification &A%0(

2 E 2ending !late

) E )a!acitance stri!D E )a!acitance mat!ad

: E H$draulic load cells

F E Fiber o!tic -NEW@ E Strain gauge on bridge beam

H E Human obser/ation &manual(

0 E 0nfrared

C E aserlidar E 0nductance loo!

M E Magnetometer

E ie4oelectric

J E Juart4 !ie4oelectric -NEWR E Road tube

S E SonicacousticT E Ta!e sitch

E ltrasonic% E %ideo image

W E Microa/e

L E Radio a/e

E 7ther

#. Secon) T8e o+ Seno(&)olumn #(

0f there are to t$!es of sensors at the station3 code the second using the same codes as

T$!e of Sensor. 7therise3 code ?;? for none.

". P(i'( P4(8oe&)olumn ##( -NEW

This field indicates the "ri%ary "ur"oe for installing the station and hence hich

organi4ation is res!onsible for it and su!!lies the data.

: E :nforcement !ur!oses &e.g.3 s!eed or eight enforcement(

0 E 7!erations !ur!oses in su!!ort of 0TS initiati/es

E oad data for !a/ement design or !a/ement management !ur!oses

7 E 7!erations !ur!oses but not &TS E lanning or traffic statistics !ur!oses

R E Research !ur!oses &e.g.3 T(

+. RS I)enti+ic'tion&)olumns #"-"+( -NEW

The RS 0dentification re!orted in this item for the station must be the same as the RS

identification re!orted in the HMS for the section of roada$ here the station islocated. The RS identification is a 1-character3 right >ustified /alue. The RS 0D can

be al!hanumeric3 but must not contain blan,s leading 4eros must be coded. More

information concerning the RS ma$ be found in )ha!ter % of the'PMS (ield Manual3inear Referencing S$stem Reuirements.

6-G


12/24


May 1, 2001

6. RS oc'tion Point&)olumns "6-+1( -NEW

This is the LRS location point for the station. It is similar information to the LRS

Beginning Point and LRS Ending Point in the HPMS. The KMPT for the station must be

within the range of the LRS beginning point and LRS ending point for the roadwaysection upon which the station is located. It is coded in kilometers with an implied

decimal in the middle: XXX.XXX.

27. Latitude(Columns 52-59) -NEW

This is the latitude of the station location ith the north hemis!here assumed and decimal

!lace understood as LL.LLL LLL.

*. onit4)e&)olumns 6-6*( -NEW

This is the longitude of the station location ith the est hemis!here assumed and

decimal !lace understood as LLL.LLL LLL.

G. SHRP Site I)enti+ic'tion&)olumns 6G-8( -NEW

0f the site is used in the SHRT sam!le3 gi/e the SHR site 0D.

#. P(e/io4 St'tion ID&)olumns 8#-8*(

0f the station re!laces another station3 gi/e the station 0D that as used !re/iousl$.

#1. :e'( St'tion Et'90i,e)&)olumns 8G-*(

)ode the last to digits of the a!!ro!riate $ear if ,non.

#. :e'( St'tion Dicontin4e)&)olumns *1-*(

)ode the last to digits of the a!!ro!riate $ear if ,non.

##. FIPS Co4nt Co)e&)olumns *#-*+(

se the three-digit F0S count$ code &see Federal 0nformation rocessing Standardsublication 63 ?)ounties of the States of the nited States?(.

#". HPMS S'80e T8e&)olumn *6(

; E ;o3 not on an HMS standard sam!le section

I E Ies3 on an HMS standard sam!le section

#+. HPMS S'80e I)enti+ie(&)olumns *8-G*(

0f the station is on an HMS standard sam!le section3 code the HMS Sam!le 0dentifier!er the'PMS (ield Manual&0tem "8(.

6-1


13/24


May 1, 2001

#6. N'tion'0 Hi,' Ste&)olumn 66( -NEW

; E ;o3 not on ;ational Higha$ S$stem

I E Ies3 on ;ational Higha$ S$stem

#8. Pote) Ro4te Sinin&)olumn 1(

This is the same as Route Signing in'PMS (ield Manual&0tem (.

)ode Descri!tion )ode Descri!tion ;ot signed + )ount$

1 0nterstate 6 Tonshi!

.S. 8 Munici!al

# State * ar,a$ or Forest Route Mar,er " 7ff-0nterstate 2usiness Mar,er G ;one of the abo/e

#*. Pote) Sine) Ro4te N49e(&)olumns 11-1*(

)ode the route number of the !rinci!al route on hich the station is located. 0f thestation is located on a cit$ street3 4ero-fill this field. This is the same as Signed Route;umber in'PMS (ield Manual&0tem "(.

#G. Conc4((ent Ro4te Sinin&)olumn 1G(

)ode same as osted Route Signing for concurrent route if there is one.

". Conc4((ent Sine) Ro4te N49e(&)olumns 11-118(

)ode same as osted Signed Route ;umber for concurrent route if there is one.

"1. St'tion oc'tion&)olumns 11*-168(

For stations located on a numbered route3 enter the distance and direction of the station

from the nearest ma>or intersecting route or state border or landmar, on state road ma!s.0f the station is located on a cit$ street3 enter the cit$ and street name. Abbre/iate if

necessar$. eft >ustif$.

6-11


14/24


May 1, 2001

CHAPTER 3

TRAFFIC VOUME DATA FORMATS

The Traffic %olume file contains one record for each da$ of traffic monitoring.

All numeric fields should be right->ustified and 4ero-filled. Table 6-#-1 summari4es the

Hourl$ Traffic %olume record. The fields are as follos5


# E Traffic /olume record

. FIPS St'te Co)e&)olumns -#( - See cha!ter 6-. - Critical

#. F4nction'0 C0'i+ic'tion Co)e&)olumns "-+( - See cha!ter 6-. - Critical

". St'tion I)enti+ic'tion&)olumns 6-11( - See cha!ter 6-. - Critical

This should be right->ustified and 4ero-filled. - Critical

+. Di(ection o+ T('/e0 Co)e&)olumn 1( - See cha!ter 6-. - Critical

6. 'ne o+ T('/e0&)olumn 1#( - See cha!ter 6-. - Critical

The code for combined lanes &( is !referred.

8. :e'( o+ D't'&)olumns 1"-1+( - See cha!ter 6-. - Critical

*. Mont, o+ D't'&)olumns 16-18( - Critical

1 E Banuar$

E Februar$

# E March" E A!ril

+ E Ma$

6 E Bune

8 E Bul$* E August

G E Se!tember

1 E 7ctober

11 E ;o/ember1 E December

G. D' o+ D't'&)olumns 1*-1G( - Critical

)ode the da$ of the month of data3 1-#1. Must corres!ond to the month of data.

6-1


15/24


May 1, 2001

1. D' o+ $ee;&)olumn ( - )"tional

1 E Sunda$

E Monda$# E Tuesda$

" E Wednesda$

+ E Thursda$6 E Frida$8 E Saturda$

11-#". T('++ic Vo04e Co4nte) Fie0)&)olumns 1-+3 ...3 1#6-1"(

:nter the traffic /olume counted during the hour co/ered. 0f the data are missing3 code a

-1 or blan,s.

Field Hour )o/ered

11 51 am to 15 am

1 151 am to 5 am . .

. . . .

#" 1151 !m to 15 midnight

#+. Ret(iction&)olumn 1"1(

E no restrictions

1 E construction or other acti/it$ affected traffic flo

E traffic counting de/ice !roblem &e.g.3 malfunction or o/erflo( - ;:W

6-1#


16/24


May 1, 2001

T'90e 6-3-17 Ho4(0 T('++ic Vo04e Reco()

Fie0) Co04n ent, Dec(i8tion


# "-+ Functional )lassification

" 6-11 6 Station 0dentification+ 1 1 Direction of Tra/el

6 1# 1 ane of Tra/el

8 1"-1+ Iear of Data* 16-18 Month of Data

G 1*-1G Da$ of Data

1 1 Da$ of Wee,

11 1-+ + Traffic %olume )ounted3 51 - 15

1 6-# + Traffic %olume )ounted3 151 - 51# #1-#+ + Traffic %olume )ounted3 51 - #5

1" #6-" + Traffic %olume )ounted3 #51 - "51+ "1-"+ + Traffic %olume )ounted3 "51 - +5

16 "6-+ + Traffic %olume )ounted3 +51 - 65

18 +1-++ + Traffic %olume )ounted3 651 - 851* +6-6 + Traffic %olume )ounted3 851 - *5

1G 61-6+ + Traffic %olume )ounted3 *51 - G5

66-8 + Traffic %olume )ounted3 G51 - 15

1 81-8+ + Traffic %olume )ounted3 151 - 115 86-* + Traffic %olume )ounted3 1151 - 15

# *1-*+ + Traffic %olume )ounted3 151 - 1#5" *6-G + Traffic %olume )ounted3 1#51 - 1"5+ G1-G+ + Traffic %olume )ounted3 1"51 - 1+5

6 G6-1 + Traffic %olume )ounted3 1+51 - 165

8 11-1+ + Traffic %olume )ounted3 1651 - 185* 16-11 + Traffic %olume )ounted3 1851 - 1*5

G 111-11+ + Traffic %olume )ounted3 1*51 - 1G5

# 116-1 + Traffic %olume )ounted3 1G51 - 5#1 11-1+ + Traffic %olume )ounted3 51 - 15

# 16-1# + Traffic %olume )ounted3 151 - 5

## 1#1-1#+ + Traffic %olume )ounted3 51 - #5

#" 1#6-1" + Traffic %olume )ounted3 #51 - "5#+ 1"1 1 Restrictions

6-1"


17/24


May 1, 2001

CHAPTER !

VEHICE CASSIFICATION DATA FORMATS

The %ehicle )lassification file contains one record for each hour ith the traffic

/olume b$ /ehicle class. The o!tional file naming con/ention is ?ss$$.)A?3 here ss is

state !ostal abbre/iation and $$ is the last to digits of the $ear. Table 6-"-1 summari4es

the %ehicle )lassification record.

Fields designated as Criticalare reuired for entr$ into the %TR0S data base.


) E %ehicle classification record

. FIPS St'te Co)e&)olumns -#( - Critical- See cha!ter 6-.

#. St'tion I)enti+ic'tion&)olumns "-G( - Critical- See cha!ter 6-.

". Di(ection o+ T('/e0 Co)e&)olumn 1( - Critical- See cha!ter 6-.

+. 'ne o+ T('/e0&)olumn 11( - Critical- See cha!ter 6-.

Note7 T,e St'tion ID5 Di(ection o+ T('/e05 'n) 'ne o+ T('/e0 ';e 48 t,e St'tion

Co)e. There hould be one Station !ecri"tion record "er Station Code.

6. :e'( o+ D't'&)olumns 1-1#( - Critical- See cha!ter 6-.

8. Mont, o+ D't'&)olumns 1"-1+( - Critical- See cha!ter 6-#.

*. D' o+ D't'&)olumns 16-18( - Critical- See cha!ter 6-#.

G. Ho4( o+ D't'&)olumns 1*-1G( - Critical

)ode the beginning of the hour in hich the count as ta,en5

E 51 a.m. to 15 a.m.

1 E 151 a.m. to 5 a.m..

.

.

E 151 !.m. to 115 !.m.# E 1151 !.m. to Midnight

1. Tot'0 Ho4(0 Vo04e&)olumns -"(

This numeric field is the total traffic /olume for the hour. The total /olume is needed

because some /ehicles might not be classified3 in hich case the sum of the class counts

6-1+


18/24


May 1, 2001

ould not eual the total /olume. 0f the total /olume is not collected3 lea/e this field

blan, or !ut


19/24


May 1, 2001

1G. C0' % Co4nt&)olumns 6+-6G( - Critical

)lass G is for Fi/e-A9le3 Single-Trailer Truc,s.

. C0' 1 Co4nt&)olumns 8-8"( - Critical

)lass 1 is for Si9-or-More A9le3 Single-Trailer Truc,s.

1. C0' 11 Co4nt&)olumns 8+-8G( - Critical

)lass 11 is for Fi/e-or-ess A9le3 Multi-Trailer Truc,s.

. C0' 12 Co4nt&)olumns *-*"( - Critical

)lass 1 is for Si9-A9le3 Multi-Trailer Truc,s.

#. C0' 13 Co4nt&)olumns *+-*G( - Critical

)lass 1# is for Se/en-or-More A9le3 Multi-Trailer Truc,s.

The -ehicle Claification record %ay be ended here if e.actly 1 clae are ued#

'o$e*er, o%e auto%atic *ehicle claification yte% ha*e one or t$o %ore claeuually deignating 7nclaified or 7nclaifiable *ehicle# &f Cla 1 and8or Cla

19 are included uch that the total of all the clae e:ual the total *olu%e, then the

Total -olu%e field %ay be left blan5#

". C0' 1! Co4nt&)olumns G-G"( - )"tional

0f a )lass 1" is used3 enter the count for the hour here.

+. C0' 1" Co4nt&)olumns G+-GG( - )"tional

0f a )lass 1+ is used3 enter the count for the hour here.

6-18


20/24


May 1, 2001

T'90e 6-!-17 Ve,ic0e C0'i+ic'tion Reco()



# "-G 6 Station 0D

" 1 1 Direction of Tra/el )ode+ 11 1 ane of Tra/el

6 1-1# Iear of Data

8 1"-1+ Month of Data* 16-18 Da$ of Data

G 1*-1G Hour of Data

1 -" + Total %olume

11 +-G + )lass 1 )ount

1 #-#" + )lass )ount1# #+-#G + )lass # )ount

1" "-"" + )lass " )ount1+ "+-"G + )lass + )ount

16 +-+" + )lass 6 )ount

18 ++-+G + )lass 8 )ount1* 6-6" + )lass * )ount

1G 6+-6G + )lass G )ount

8-8" + )lass 1 )ount

1 8+-8G + )lass 11 )ount *-*" + )lass 1 )ount

# *+-*G + )lass 1# )ount

:nd the record here if the FHWA 1# class s$stem is being used.

" G-G" + )lass 1" )ount &o!tional(+ G+-GG + )lass 1+ )ount &o!tional(

6-1*


21/24


May 1, 2001

CHAPTER "

TRUC# $EIGHT DATA FORMATS

The Truc, Weight file contains one record for each truc, ith its a9le eights and

a9le s!acings. The o!tional file naming con/ention is ?ss$$.W@T?3 here ss is the state

!ostal abbre/iation and $$ is the last to digits of the $ear. Table 6 -+-1 summari4es the

Truc, Weight record.

Fields designated as Criticalare reuired for entr$ into the %TR0S database.


W E Truc, eight record

. FIPS St'te Co)e&)olumns -#( - Critical- See cha!ter 6-.

#. St'tion I)enti+ic'tion&)olumns "-G( - Critical- See cha!ter 6-.

". Di(ection o+ T('/e0 Co)e&)olumn 1( - Critical- See cha!ter 6-.

+. 'ne o+ T('/e0&)olumn 11( - Critical- See cha!ter 6-.

Note7 T,e St'tion ID5 Di(ection o+ T('/e05 'n) 'ne o+ T('/e0 ';e 48 t,e St'tion

Co)e. There hould be one Station !ecri"tion record "er Station Code.

6. :e'( o+ D't'&)olumns 1-1#( - Critical- See cha!ter 6-.

8. Mont, o+ D't'&)olumns 1"-1+( - Critical- See cha!ter 6-#.

*. D' o+ D't'&)olumns 16-18( - Critical- See cha!ter 6-#.

G. Ho4( o+ D't'&)olumns 1*-1G( - Critical

)ode the beginning of the hour in hich the count as ta,en5

E 51 a.m. to 15 a.m.

1 E 151 a.m. to 5 a.m..

.

. E 151 !.m. to 115 !.m.# E 1151 !.m. to Midnight

6-1G


22/24


May 1, 2001

Table 6-5-1: Truck Weight Record


1 1 1 Record T$!e -# F0S State )ode# "-G 6 Station 0D

" 1 1 Direction of Tra/el )ode

+ 11 1 ane of Tra/el

6 1-1# Iear of Data8 1"-1+ Month of Data

* 16-18 Da$ of Data

G 1*-1G Hour of Data1 -1 %ehicle )lass

11 -" # 7!en

1 +-* " Total Weight of %ehicle1# G-# ;umber of A9les

1" #1-## # A-a9le Weight

1+ #"-#6 # A-2 A9le S!acing16 #8-#G # 2-a9le Weight

18 "-" # 2-) A9le S!acing

1* "#-"+ # )-a9le Weight

1G "6-"* # )-D A9le S!acing "G-+1 # D-a9le Weight

1 +-+" # D-: A9le S!acing

++-+8 # :-a9le Weight

# +*-6 # :-F A9le S!acing" 61-6# # F-a9le Weight

+ 6"-66 # F-@ A9le S!acing6 68-6G # @-a9le Weight

8 8-8 # @-H A9le S!acing

* 8#-8+ # H-a9le Weight

G 86-8* # H-0 A9le S!acing# 8G-*1 # 0-a9le Weight

#1 *-*" # 0-B A9le S!acing

# *+-*8 # B-a9le Weight## **-G # B-C A9le S!acing

#" G1-G# # C-a9le Weight#+ G"-G6 # C- A9le S!acing#6 G8-GG # -a9le Weight

#8 1-1 # -M A9le S!acing

#* 1#-1+ # M-a9le Weight

Note; The nu%ber of a.le deter%ine the nu%ber of a.le $eight and "acing field#

6-


23/24


May 1, 2001

1. Ve,ic0e C0'&)olumns -1( - Critical

:nter the class of the /ehicle from FHWA %ehicle )lasses 1 to 1#. )lasses 1 - # areordinaril$ omitted.

A dummy vehicle class of -1 indicates that weight data for this hour are missing. A

dummy vehicle class of 0 indicates that weight data for this hour are not missing, and

thus if there are no Truck Weight records for the hour, then there were no trucks during

that hour. Without these indications, no Truck Weight records for an hour might be

interpreted to mean that the WIM system was not working.

11. O8en &)olumns -"( - )"tional

This field is for s!ecial studies or State use such as for /ehicle s!eed &,ilometers !er

hour( or !a/ement tem!erature &degrees )elsius in the range -GG to NGG(.

1. Tot'0 $ei,t o+ Ve,ic0e&)olumns +-*(

:nter the gross /ehicle eight to the nearest tenth of a metric ton &1 ,ilograms(

ithout a decimal !oint. This should eual the sum of all the a9le eights e9ce!t forrounding.

1#. N49e( o+ A0e&)olumns G-#(

:nter the total number of a9les in use b$ the /ehicle &including an$ trailers(.

The Nu%ber of /.le deter%ine ho$ %any /.le Weight and S"acing field $ill be

e."ected# /.le Weight and S"acing field that are not needed %ay be o%itted#&f a fi.ed3

length record i deired, "ad the record $ith blan5 to the deired length#

The rest of the record alternates between axle weights and axle spacings, starting from

the front of the vehicle. Axle weights are to the nearest tenth of a metric ton (100

kilograms) without a decimal point. Axle spacings are to the nearest tenth of a meter

(100 millimeters) without a decimal point.

Reasonableness checks should be performed on the axle weights and spacings. The

default limits in VTRIS are 200 to 20,000 kilograms for axle weights and 0.5 to 15 meters

for axle spacings. The user may adjust these values.

1". A-'0e $ei,t&)olumns #1-##(

1+. A-& A0e S8'cin&)olumns #"-#6(

16. &-'0e $ei,t&)olumns #8-#G(

18. &-C A0e S8'cin&)olumns "-"(

6-1


24/24


May 1, 2001

1*. C-'0e $ei,t&)olumns "#-"+(

1G. C-D A0e S8'cin&)olumns "6-"*(

. D-'0e $ei,t&)olumns "G-+1(

1. D-E A0e S8'cin&)olumns +-+"(

. E-'0e $ei,t&)olumns ++-+8(

#. E-F A0e S8'cin &)olumns +*-6(

". F-'0e $ei,t&)olumns 61-6#(

+. F-G A0e S8'cin&)olumns 6"-66(

6. G-'0e $ei,t&)olumns 68-6G(

8. G-H A0e S8'cin&)olumns 8-8(

*. H-'0e $ei,t&)olumns 8#-8+(

G. H-I A0e S8'cin&)olumns 86-8*(

#. I-'0e S8'cin&)olumns 8G-*1(

#1. I-B A0e S8'cin&)olumns *-*"(

#. B-'0e $ei,t&)olumns *+-*8(

##. B-# A0e S8'cin&)olumns **-G(

#". #-'0e $ei,t&)olumns G1-G#(

#+. #- A0e S8'cin&)olumns G"-G6(

#6. -'0e $ei,t&)olumns G8-GG(

#8. -M A0e S8'cin&)olumns 1-1(

#*. M-'0e $ei,t&)olumns 1#-1+(

Additional axle spacing and axle weight fields may be added in the same manner if

needed.

FHWA - Traffic Monitoring Data Format (Chp 6) 2001

Documents

Transcript of FHWA - Traffic Monitoring Data Format (Chp 6) 2001