R5R Ignoring transfer.txt file in GTFS

[AlexisMergan]

Hello,

I have been trying for my research to block transfers to specific trainlines (radial trainlines to a circular trainline that is connected to it). The problem however is that my travel times with a transfer block inside the GTFS transfers.txt file (all stations on the line are blocked with transfer_type 3) are perfectly the same as the transfer times without the transfer block.

I have tried to modify the GTFS in many ways, but it seems that r5r ignores the transfer file. This is weird as when I let its pass through different GTFS validators (tidyverse, GTFS_tools) thhey don't point at a problem on the transfer file.

Could you check out if while building the network the r5r module ignores the transfer file txt or if I should make other modifications so that it doesn't ignore the file?

I thank you for your kind help.

Best regards,
Alexis

0 3 radial lines blocked_gtfs.zip

` function to generate a situation report, and paste the output along with your issue. This will help us find eventual bugs.

Brief description of the problem:

Can't make the transfer blocks to be applied in the calculus of time. The calculus is done with a very reduced GTFS of London. Couldn't upload the osm file of London sorry.

Reproducible example here

# insert reproducible example here

library(r5r)

# Test 3 overground with no transfers --------------------------------------------------------
#setting the paths
r5rNoconnectiowtr_path <- paste0(file_dir, "Data/Cleaned data/Travel time data/R5R data/Alternative scenarii/0 3 radial lines blocked")

#building the network
r5r2011 <- setup_r5(r5rNoconnectiowtr_path, verbose=TRUE)

r5r_sitrep()

# routing inputs
mode <- c('rail', 'SUBWAY')
max_trip_duration <- 260 # minutes
max_travel_rides <- 4

# departure time
departure_datetime <- as.POSIXct("07-10-2011 08:30:00", 
                                 format = "%d-%m-%Y %H:%M:%S")



#Calculating a detailed travel time matrix with transfer blocks
traveltime_2011_m_rail_detailed3<- expanded_travel_time_matrix(r5r2011,   
                                                              origins = highbury_coords,
                                                              destinations = windrush_coords,    
                                                              mode = mode,
                                                              time_window = 20L,
                                                              max_trip_duration = max_trip_duration,
                                                              departure_datetime = departure_datetime,
                                                              max_rides = max_travel_rides,
                                                              walk_speed = 13,
                                                              max_walk_time = 60,
                                                              progress = TRUE)




r5rNoconnectiowtr_path <- paste0(file_dir, "Data/Cleaned data/Travel time data/R5R data/Alternative scenarii/0 4 radial lines not blocked")

#building the network
r5r20112 <- setup_r5(r5rNoconnectiowtr_path, verbose=TRUE)


# routing inputs
mode <- c('rail', 'SUBWAY')
max_trip_duration <- 260 # minutes
max_travel_rides <- 4

# departure time
departure_datetime <- as.POSIXct("07-10-2011 08:30:00", 
                                 format = "%d-%m-%Y %H:%M:%S")



#Calculating a detailed travel time matrix with no transfer blocks

traveltime_2011_m_rail_detailed4<- expanded_travel_time_matrix(r5r20112,   
                                                        origins = highbury_coords,
                                                        destinations = windrush_coords,    
                                                        mode = mode,
                                                        time_window = 20L,
                                                        max_trip_duration = max_trip_duration,
                                                        departure_datetime = departure_datetime,
                                                        max_rides = max_travel_rides,
                                                        walk_speed = 13,
                                                        max_walk_time = 60,
                                                        progress = TRUE)

#Getting exactly the same times plus there seem to be a transfer from route LO_2521 to the other routes

Situation report here

r5r::r5r_sitrep()

$r5r_package_version
[1] ‘2.0’

$r5_jar_version
[1] "7.1"

$java_version
[1] "21.0.5"

$set_memory
[1] "-Xmx30G"

$session_info
R version 4.4.2 (2024-10-31 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows 11 x64 (build 26100)

Matrix products: default


locale:
[1] LC_COLLATE=English_United States.utf8  LC_CTYPE=English_United States.utf8    LC_MONETARY=English_United States.utf8
[4] LC_NUMERIC=C                           LC_TIME=English_United States.utf8    

time zone: Europe/Brussels
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] leaflet_2.2.2       ggmap_4.0.1         readxl_1.4.3        lubridate_1.9.4     forcats_1.0.0       stringr_1.5.1      
 [7] dplyr_1.1.4         purrr_1.0.2         readr_2.1.5         tidyr_1.3.1         tibble_3.2.1        ggplot2_3.5.2      
[13] tidyverse_2.0.0     accessibility_1.4.0 mapview_2.11.2      sf_1.0-19           r5r_2.0             haven_2.5.4        
[19] rJava_1.0-11       

loaded via a namespace (and not attached):
 [1] gtable_0.3.6            raster_3.6-30           htmlwidgets_1.6.4       lattice_0.22-6          tzdb_0.4.0             
 [6] bitops_1.0-9            leaflet.providers_2.0.0 vctrs_0.6.5             tools_4.4.2             Rdpack_2.6.2           
[11] crosstalk_1.2.1         generics_0.1.3          stats4_4.4.2            proxy_0.4-27            sfheaders_0.4.4        
[16] pkgconfig_2.0.3         KernSmooth_2.23-24      checkmate_2.3.2         satellite_1.0.5         data.table_1.16.4      
[21] RColorBrewer_1.1-3      lifecycle_1.0.4         compiler_4.4.2          munsell_0.5.1           terra_1.7-83           
[26] codetools_0.2-20        htmltools_0.5.8.1       class_7.3-22            pillar_1.10.0           jquerylib_0.1.4        
[31] classInt_0.4-10         tidyselect_1.2.1        digest_0.6.37           stringi_1.8.4           fastmap_1.2.0          
[36] grid_4.4.2              colorspace_2.1-1        cli_3.6.3               magrittr_2.0.3          base64enc_0.1-3        
[41] leafem_0.2.3            e1071_1.7-16            withr_3.0.2             backports_1.5.0         scales_1.3.0           
[46] sp_2.1-4                timechange_0.3.0        httr_1.4.7              jpeg_0.1-11             cellranger_1.1.0       
[51] png_0.1-8               hms_1.1.3               rbibutils_2.3           rlang_1.1.4             Rcpp_1.0.13-1          
[56] glue_1.8.0              DBI_1.2.3               jsonlite_1.8.9          rstudioapi_0.17.1       plyr_1.8.9             
[61] R6_2.5.1                units_0.8-5            

[rafapereirabr]

Hi @AlexisMergan , do you want to prohibit transfers between specific trainlines, correct? I couldn't find any specific info related to the transfers table in the documentation website of R5. Perhaps this could be an issue upstream.

[AlexisMergan]

Hi @rafapereirabr. Thanks a lot for answering my message.

I'll ask my question then at the R5 github page.

Thank you for all your help.

Best regards,
Alexis

[rafapereirabr]

@AlexisMergan , one thing I would recommend in this case is to use the expanded_travel_time_matrix(). The output include additional columns, including the transit routes used in each trip. This way you would know exactly which routes or combinations of routes are being used. It might be possible that those tranfers you are trying to prohibit (or at least some of them) were not being used in the first place, but that's just a guess.

also, if you use the dev version of {r5r} you will see that the package now saves a log file in the data path. You can open that file and search for any issues with the ward "transfer" using Ctrl + F