Detailed Guide for Big B-router
A (step by step) guide to Big B-router
Prereqs:
1. Conda to manage python environment, I used miniconda3, AUR link
2. Some IDE to run python notebooks (using said conda env), I used vscodium with jupyter and jupyter notebook renderer extensions
3. Java to run osmandmapcreator.jar
4?. Osmium tool should work through conda, if not you may have to manually run the commands in pbf-prep , AUR link, conda-forge
We start by creating the python environment, under the name gis-py312
conda create -n gis-py312 -c conda-forge geopandas folium pyrosm pyosmium notebook ipyleaflet osmium-tool
Full package list:
_openmp_mutex conda-forge/linux-64::_openmp_mutex-4.5-20_gnu _python_abi3_supp~ conda-forge/noarch::_python_abi3_support-1.0-hd8ed1ab_2 anyio conda-forge/noarch::anyio-4.13.0-pyhcf101f3_0 argon2-cffi conda-forge/noarch::argon2-cffi-25.1.0-pyhd8ed1ab_0 argon2-cffi-bindi~ conda-forge/linux-64::argon2-cffi-bindings-25.1.0-py312h4c3975b_2 arrow conda-forge/noarch::arrow-1.4.0-pyhcf101f3_0 asttokens conda-forge/noarch::asttokens-3.0.1-pyhd8ed1ab_0 async-lru conda-forge/noarch::async-lru-2.3.0-pyhcf101f3_0 attrs conda-forge/noarch::attrs-26.1.0-pyhcf101f3_0 babel conda-forge/noarch::babel-2.18.0-pyhcf101f3_1 backports.zstd conda-forge/linux-64::backports.zstd-1.4.0-py312h90b7ffd_0 beautifulsoup4 conda-forge/noarch::beautifulsoup4-4.14.3-pyha770c72_0 bleach conda-forge/noarch::bleach-6.3.0-pyhcf101f3_1 bleach-with-css conda-forge/noarch::bleach-with-css-6.3.0-hbca2aae_1 blosc conda-forge/linux-64::blosc-1.21.6-he440d0b_1 branca conda-forge/noarch::branca-0.8.2-pyhd8ed1ab_0 brotli conda-forge/linux-64::brotli-1.2.0-hed03a55_1 brotli-bin conda-forge/linux-64::brotli-bin-1.2.0-hb03c661_1 brotli-python conda-forge/linux-64::brotli-python-1.2.0-py312hdb49522_1 bzip2 conda-forge/linux-64::bzip2-1.0.8-hda65f42_9 c-ares conda-forge/linux-64::c-ares-1.34.6-hb03c661_0 ca-certificates conda-forge/noarch::ca-certificates-2026.4.22-hbd8a1cb_0 cached-property conda-forge/noarch::cached-property-1.5.2-hd8ed1ab_1 cached_property conda-forge/noarch::cached_property-1.5.2-pyha770c72_1 certifi conda-forge/noarch::certifi-2026.4.22-pyhd8ed1ab_0 cffi conda-forge/linux-64::cffi-2.0.0-py312h460c074_1 charset-normalizer conda-forge/noarch::charset-normalizer-3.4.7-pyhd8ed1ab_0 comm conda-forge/noarch::comm-0.2.3-pyhe01879c_0 contourpy conda-forge/linux-64::contourpy-1.3.3-py312h0a2e395_4 cpython conda-forge/noarch::cpython-3.12.13-py312hd8ed1ab_0 cycler conda-forge/noarch::cycler-0.12.1-pyhcf101f3_2 cykhash conda-forge/linux-64::cykhash-2.0.1-py312h1289d80_3 cython conda-forge/linux-64::cython-3.2.4-py312h68e6be4_0 debugpy conda-forge/linux-64::debugpy-1.8.20-py312h8285ef7_0 decorator conda-forge/noarch::decorator-5.2.1-pyhd8ed1ab_0 defusedxml conda-forge/noarch::defusedxml-0.7.1-pyhd8ed1ab_0 exceptiongroup conda-forge/noarch::exceptiongroup-1.3.1-pyhd8ed1ab_0 executing conda-forge/noarch::executing-2.2.1-pyhd8ed1ab_0 folium conda-forge/noarch::folium-0.20.0-pyhd8ed1ab_0 fonttools conda-forge/linux-64::fonttools-4.62.1-py312h8a5da7c_0 fqdn conda-forge/noarch::fqdn-1.5.1-pyhd8ed1ab_1 freetype conda-forge/linux-64::freetype-2.14.3-ha770c72_0 freexl conda-forge/linux-64::freexl-2.0.0-h9dce30a_2 geopandas conda-forge/noarch::geopandas-1.1.3-pyhd8ed1ab_0 geopandas-base conda-forge/noarch::geopandas-base-1.1.3-pyha770c72_0 geos conda-forge/linux-64::geos-3.14.1-h480dda7_0 giflib conda-forge/linux-64::giflib-5.2.2-hd590300_0 h11 conda-forge/noarch::h11-0.16.0-pyhcf101f3_1 h2 conda-forge/noarch::h2-4.3.0-pyhcf101f3_0 hpack conda-forge/noarch::hpack-4.1.0-pyhd8ed1ab_0 httpcore conda-forge/noarch::httpcore-1.0.9-pyh29332c3_0 httpx conda-forge/noarch::httpx-0.28.1-pyhd8ed1ab_0 hyperframe conda-forge/noarch::hyperframe-6.1.0-pyhd8ed1ab_0 icu conda-forge/linux-64::icu-78.3-h33c6efd_0 idna conda-forge/noarch::idna-3.13-pyhcf101f3_0 importlib-metadata conda-forge/noarch::importlib-metadata-8.8.0-pyhcf101f3_0 importlib_resourc~ conda-forge/noarch::importlib_resources-7.1.0-pyhd8ed1ab_0 ipykernel conda-forge/noarch::ipykernel-7.2.0-pyha191276_1 ipyleaflet conda-forge/noarch::ipyleaflet-0.20.0-pyhd8ed1ab_0 ipython conda-forge/noarch::ipython-9.13.0-pyh53cf698_0 ipython_pygments_~ conda-forge/noarch::ipython_pygments_lexers-1.1.1-pyhd8ed1ab_0 ipywidgets conda-forge/noarch::ipywidgets-8.1.8-pyhd8ed1ab_0 isoduration conda-forge/noarch::isoduration-20.11.0-pyhd8ed1ab_1 jedi conda-forge/noarch::jedi-0.19.2-pyhd8ed1ab_1 jinja2 conda-forge/noarch::jinja2-3.1.6-pyhcf101f3_1 joblib conda-forge/noarch::joblib-1.5.3-pyhd8ed1ab_0 json-c conda-forge/linux-64::json-c-0.18-h6688a6e_0 json5 conda-forge/noarch::json5-0.14.0-pyhd8ed1ab_0 jsonpointer conda-forge/noarch::jsonpointer-3.1.1-pyhcf101f3_0 jsonschema conda-forge/noarch::jsonschema-4.26.0-pyhcf101f3_0 jsonschema-specif~ conda-forge/noarch::jsonschema-specifications-2025.9.1-pyhcf101f3_0 jsonschema-with-f~ conda-forge/noarch::jsonschema-with-format-nongpl-4.26.0-hcf101f3_0 jupyter-lsp conda-forge/noarch::jupyter-lsp-2.3.1-pyhcf101f3_0 jupyter_client conda-forge/noarch::jupyter_client-8.8.0-pyhcf101f3_0 jupyter_core conda-forge/noarch::jupyter_core-5.9.1-pyhc90fa1f_0 jupyter_events conda-forge/noarch::jupyter_events-0.12.1-pyhcf101f3_0 jupyter_leaflet conda-forge/noarch::jupyter_leaflet-0.20.0-pyhd8ed1ab_0 jupyter_server conda-forge/noarch::jupyter_server-2.18.2-pyhcf101f3_0 jupyter_server_te~ conda-forge/noarch::jupyter_server_terminals-0.5.4-pyhcf101f3_0 jupyterlab conda-forge/noarch::jupyterlab-4.5.7-pyhd8ed1ab_0 jupyterlab_pygmen~ conda-forge/noarch::jupyterlab_pygments-0.3.0-pyhd8ed1ab_2 jupyterlab_server conda-forge/noarch::jupyterlab_server-2.28.0-pyhcf101f3_0 jupyterlab_widgets conda-forge/noarch::jupyterlab_widgets-3.0.16-pyhcf101f3_1 keyutils conda-forge/linux-64::keyutils-1.6.3-hb9d3cd8_0 kiwisolver conda-forge/linux-64::kiwisolver-1.5.0-py312h0a2e395_0 krb5 conda-forge/linux-64::krb5-1.22.2-ha1258a1_0 lark conda-forge/noarch::lark-1.3.1-pyhd8ed1ab_0 lcms2 conda-forge/linux-64::lcms2-2.19.1-h0c24ade_0 ld_impl_linux-64 conda-forge/linux-64::ld_impl_linux-64-2.45.1-default_hbd61a6d_102 lerc conda-forge/linux-64::lerc-4.1.0-hdb68285_0 libarchive conda-forge/linux-64::libarchive-3.8.7-gpl_hc2c16d8_100 libblas conda-forge/linux-64::libblas-3.11.0-6_h4a7cf45_openblas libbrotlicommon conda-forge/linux-64::libbrotlicommon-1.2.0-hb03c661_1 libbrotlidec conda-forge/linux-64::libbrotlidec-1.2.0-hb03c661_1 libbrotlienc conda-forge/linux-64::libbrotlienc-1.2.0-hb03c661_1 libcblas conda-forge/linux-64::libcblas-3.11.0-6_h0358290_openblas libcurl conda-forge/linux-64::libcurl-8.20.0-hcf29cc6_0 libdeflate conda-forge/linux-64::libdeflate-1.25-h17f619e_0 libedit conda-forge/linux-64::libedit-3.1.20250104-pl5321h7949ede_0 libev conda-forge/linux-64::libev-4.33-hd590300_2 libexpat conda-forge/linux-64::libexpat-2.8.0-hecca717_0 libffi conda-forge/linux-64::libffi-3.5.2-h3435931_0 libfreetype conda-forge/linux-64::libfreetype-2.14.3-ha770c72_0 libfreetype6 conda-forge/linux-64::libfreetype6-2.14.3-h73754d4_0 libgcc conda-forge/linux-64::libgcc-15.2.0-he0feb66_19 libgcc-ng conda-forge/linux-64::libgcc-ng-15.2.0-h69a702a_19 libgdal-core conda-forge/linux-64::libgdal-core-3.13.0-h08c5dba_0 libgfortran conda-forge/linux-64::libgfortran-15.2.0-h69a702a_19 libgfortran5 conda-forge/linux-64::libgfortran5-15.2.0-h68bc16d_19 libgomp conda-forge/linux-64::libgomp-15.2.0-he0feb66_19 libhwy conda-forge/linux-64::libhwy-1.4.0-h10be129_0 libiconv conda-forge/linux-64::libiconv-1.18-h3b78370_2 libjpeg-turbo conda-forge/linux-64::libjpeg-turbo-3.1.4.1-hb03c661_0 libjxl conda-forge/linux-64::libjxl-0.11.2-h174a0a3_1 libkml conda-forge/linux-64::libkml-1.3.0-haa4a5bd_1023 liblapack conda-forge/linux-64::liblapack-3.11.0-6_h47877c9_openblas liblzma conda-forge/linux-64::liblzma-5.8.3-hb03c661_0 libnghttp2 conda-forge/linux-64::libnghttp2-1.68.1-h877daf1_0 libnsl conda-forge/linux-64::libnsl-2.0.1-hb9d3cd8_1 libopenblas conda-forge/linux-64::libopenblas-0.3.32-pthreads_h94d23a6_0 libpng conda-forge/linux-64::libpng-1.6.58-h421ea60_0 librttopo conda-forge/linux-64::librttopo-1.1.0-h46dd2a8_20 libsodium conda-forge/linux-64::libsodium-1.0.21-h280c20c_3 libspatialite conda-forge/linux-64::libspatialite-5.1.0-gpl_hab3fe16_120 libsqlite conda-forge/linux-64::libsqlite-3.53.1-h0c1763c_0 libssh2 conda-forge/linux-64::libssh2-1.11.1-hcf80075_0 libstdcxx conda-forge/linux-64::libstdcxx-15.2.0-h934c35e_19 libstdcxx-ng conda-forge/linux-64::libstdcxx-ng-15.2.0-hdf11a46_19 libtiff conda-forge/linux-64::libtiff-4.7.1-h9d88235_1 libuuid conda-forge/linux-64::libuuid-2.42-h5347b49_0 libwebp-base conda-forge/linux-64::libwebp-base-1.6.0-hd42ef1d_0 libxcb conda-forge/linux-64::libxcb-1.17.0-h8a09558_0 libxcrypt conda-forge/linux-64::libxcrypt-4.4.36-hd590300_1 libxml2 conda-forge/linux-64::libxml2-2.15.3-h49c6c72_0 libxml2-16 conda-forge/linux-64::libxml2-16-2.15.3-hca6bf5a_0 libxml2-devel conda-forge/linux-64::libxml2-devel-2.15.3-h49c6c72_0 libzlib conda-forge/linux-64::libzlib-1.3.2-h25fd6f3_2 lz4-c conda-forge/linux-64::lz4-c-1.10.0-h5888daf_1 lzo conda-forge/linux-64::lzo-2.10-h280c20c_1002 mapclassify conda-forge/noarch::mapclassify-2.10.0-pyhd8ed1ab_1 markupsafe conda-forge/linux-64::markupsafe-3.0.3-py312h8a5da7c_1 matplotlib-base conda-forge/linux-64::matplotlib-base-3.10.9-py312he3d6523_0 matplotlib-inline conda-forge/noarch::matplotlib-inline-0.2.2-pyhd8ed1ab_0 minizip conda-forge/linux-64::minizip-4.2.1-hb71707f_0 mistune conda-forge/noarch::mistune-3.2.1-pyhcf101f3_0 munkres conda-forge/noarch::munkres-1.1.4-pyhd8ed1ab_1 muparser conda-forge/linux-64::muparser-2.3.5-h5888daf_0 nbclient conda-forge/noarch::nbclient-0.10.4-pyhd8ed1ab_0 nbconvert-core conda-forge/noarch::nbconvert-core-7.17.1-pyhcf101f3_0 nbformat conda-forge/noarch::nbformat-5.10.4-pyhd8ed1ab_1 ncurses conda-forge/linux-64::ncurses-6.6-hdb14827_0 nest-asyncio conda-forge/noarch::nest-asyncio-1.6.0-pyhd8ed1ab_1 networkx conda-forge/noarch::networkx-3.6.1-pyhcf101f3_0 notebook conda-forge/noarch::notebook-7.5.6-pyhcf101f3_1 notebook-shim conda-forge/noarch::notebook-shim-0.2.4-pyhd8ed1ab_1 numpy conda-forge/linux-64::numpy-2.4.3-py312h33ff503_0 openjpeg conda-forge/linux-64::openjpeg-2.5.4-h55fea9a_0 openssl conda-forge/linux-64::openssl-3.6.2-h35e630c_0 overrides conda-forge/noarch::overrides-7.7.0-pyhd8ed1ab_1 packaging conda-forge/noarch::packaging-26.2-pyhc364b38_0 pandas conda-forge/linux-64::pandas-3.0.2-py312h8ecdadd_0 pandocfilters conda-forge/noarch::pandocfilters-1.5.0-pyhd8ed1ab_0 parso conda-forge/noarch::parso-0.8.7-pyhcf101f3_0 pcre2 conda-forge/linux-64::pcre2-10.47-haa7fec5_0 pexpect conda-forge/noarch::pexpect-4.9.0-pyhd8ed1ab_1 pillow conda-forge/linux-64::pillow-12.2.0-py312h50c33e8_0 platformdirs conda-forge/noarch::platformdirs-4.9.6-pyhcf101f3_0 proj conda-forge/linux-64::proj-9.8.1-he0df7b0_0 prometheus_client conda-forge/noarch::prometheus_client-0.25.0-pyhd8ed1ab_0 prompt-toolkit conda-forge/noarch::prompt-toolkit-3.0.52-pyha770c72_0 psutil conda-forge/linux-64::psutil-7.2.2-py312h5253ce2_0 pthread-stubs conda-forge/linux-64::pthread-stubs-0.4-hb9d3cd8_1002 ptyprocess conda-forge/noarch::ptyprocess-0.7.0-pyhd8ed1ab_1 pure_eval conda-forge/noarch::pure_eval-0.2.3-pyhd8ed1ab_1 pycparser conda-forge/noarch::pycparser-2.22-pyh29332c3_1 pygments conda-forge/noarch::pygments-2.20.0-pyhd8ed1ab_0 pyogrio conda-forge/linux-64::pyogrio-0.12.1-py312hdb6ebaa_1 pyosmium conda-forge/linux-64::pyosmium-4.3.1-py312hb5eef74_0 pyparsing conda-forge/noarch::pyparsing-3.3.2-pyhcf101f3_0 pyproj conda-forge/linux-64::pyproj-3.7.2-py312hbc8341d_4 pyrobuf conda-forge/linux-64::pyrobuf-0.9.3-py312h1289d80_8 pyrosm conda-forge/linux-64::pyrosm-0.6.2-py312h30efb56_1 pysocks conda-forge/noarch::pysocks-1.7.1-pyha55dd90_7 python conda-forge/linux-64::python-3.12.13-hd63d673_0_cpython python-dateutil conda-forge/noarch::python-dateutil-2.9.0.post0-pyhe01879c_2 python-fastjsonsc~ conda-forge/noarch::python-fastjsonschema-2.21.2-pyhe01879c_0 python-gil conda-forge/noarch::python-gil-3.12.13-hd8ed1ab_0 python-json-logger conda-forge/noarch::python-json-logger-3.2.1-pyh332efcf_0 python-rapidjson conda-forge/linux-64::python-rapidjson-1.23-py312h1289d80_1 python-tzdata conda-forge/noarch::python-tzdata-2026.2-pyhd8ed1ab_0 python_abi conda-forge/noarch::python_abi-3.12-8_cp312 pyyaml conda-forge/linux-64::pyyaml-6.0.3-py312h8a5da7c_1 pyzmq conda-forge/linux-64::pyzmq-27.1.0-py312hda471dd_2 qhull conda-forge/linux-64::qhull-2020.2-h434a139_5 readline conda-forge/linux-64::readline-8.3-h853b02a_0 referencing conda-forge/noarch::referencing-0.37.0-pyhcf101f3_0 requests conda-forge/noarch::requests-2.33.1-pyhcf101f3_1 rfc3339-validator conda-forge/noarch::rfc3339-validator-0.1.4-pyhd8ed1ab_1 rfc3986-validator conda-forge/noarch::rfc3986-validator-0.1.1-pyh9f0ad1d_0 rfc3987-syntax conda-forge/noarch::rfc3987-syntax-1.1.0-pyhe01879c_1 rpds-py conda-forge/linux-64::rpds-py-0.30.0-py312h868fb18_0 scikit-learn conda-forge/linux-64::scikit-learn-1.8.0-np2py312h3226591_1 scipy conda-forge/linux-64::scipy-1.17.1-py312h54fa4ab_0 send2trash conda-forge/noarch::send2trash-2.1.0-pyha191276_1 setuptools conda-forge/noarch::setuptools-82.0.1-pyh332efcf_0 shapely conda-forge/linux-64::shapely-2.1.2-py312h383787d_2 six conda-forge/noarch::six-1.17.0-pyhe01879c_1 snappy conda-forge/linux-64::snappy-1.2.2-h03e3b7b_1 sniffio conda-forge/noarch::sniffio-1.3.1-pyhd8ed1ab_2 soupsieve conda-forge/noarch::soupsieve-2.8.3-pyhd8ed1ab_0 sqlite conda-forge/linux-64::sqlite-3.53.1-hbc0de68_0 stack_data conda-forge/noarch::stack_data-0.6.3-pyhd8ed1ab_1 terminado conda-forge/noarch::terminado-0.18.1-pyhc90fa1f_1 threadpoolctl conda-forge/noarch::threadpoolctl-3.6.0-pyhecae5ae_0 tinycss2 conda-forge/noarch::tinycss2-1.4.0-pyhd8ed1ab_0 tk conda-forge/linux-64::tk-8.6.13-noxft_h366c992_103 tomli conda-forge/noarch::tomli-2.4.1-pyhcf101f3_0 tornado conda-forge/linux-64::tornado-6.5.5-py312h4c3975b_0 traitlets conda-forge/noarch::traitlets-5.15.0-pyhcf101f3_0 traittypes conda-forge/noarch::traittypes-0.2.3-pyh332efcf_0 typing-extensions conda-forge/noarch::typing-extensions-4.15.0-h396c80c_0 typing_extensions conda-forge/noarch::typing_extensions-4.15.0-pyhcf101f3_0 typing_utils conda-forge/noarch::typing_utils-0.1.0-pyhd8ed1ab_1 tzdata conda-forge/noarch::tzdata-2025c-hc9c84f9_1 unicodedata2 conda-forge/linux-64::unicodedata2-17.0.1-py312h4c3975b_0 uri-template conda-forge/noarch::uri-template-1.3.0-pyhd8ed1ab_1 uriparser conda-forge/linux-64::uriparser-0.9.8-hac33072_0 urllib3 conda-forge/noarch::urllib3-2.7.0-pyhd8ed1ab_0 wcwidth conda-forge/noarch::wcwidth-0.7.0-pyhd8ed1ab_0 webcolors conda-forge/noarch::webcolors-25.10.0-pyhd8ed1ab_0 webencodings conda-forge/noarch::webencodings-0.5.1-pyhd8ed1ab_3 websocket-client conda-forge/noarch::websocket-client-1.9.0-pyhd8ed1ab_0 widgetsnbextension conda-forge/noarch::widgetsnbextension-4.0.15-pyhd8ed1ab_0 xerces-c conda-forge/linux-64::xerces-c-3.3.0-hd9031aa_1 xorg-libxau conda-forge/linux-64::xorg-libxau-1.0.12-hb03c661_1 xorg-libxdmcp conda-forge/linux-64::xorg-libxdmcp-1.1.5-hb03c661_1 xyzservices conda-forge/noarch::xyzservices-2026.3.0-pyhd8ed1ab_0 yaml conda-forge/linux-64::yaml-0.2.5-h280c20c_3 zeromq conda-forge/linux-64::zeromq-4.3.5-h41580af_10 zipp conda-forge/noarch::zipp-3.23.1-pyhcf101f3_0 zlib conda-forge/linux-64::zlib-1.3.2-h25fd6f3_2 zlib-ng conda-forge/linux-64::zlib-ng-2.3.3-hceb46e0_1 zstd conda-forge/linux-64::zstd-1.5.7-hb78ec9c_6
Clone or unzip the files from github
Download the osm.pbf file for your state through geofabrik.de
Open the python notebook pbf-prep.ipynb, and set the kernel to the one we created gis-py312
Run the first cell
Select a bounding box around the area of interest
Why:
- The map file expands a lot when loaded into memory. (Reducing is, practically, a necessity for large states like Texas or California)
1a. Most of the memory usage comes from the road data and not the ALPRs
1b. The road data represented 30% of the total file size for the Atlanta area in the example below.
1c. For a 38MB road file, loading in the road data increased ram usage of vscodium from ~1.5GB to ~4.5GB
- Converting from pbf to obf is slower for large files.
Adjust startingfile to point to the file you downloaded from geofabrike.de
rename outputfile if you want
and run the cell
Open the python notebook big-b-router.ipynb
Run the first cell to import libraries and define functions
Edit the filenames to match what was created with pbf-prep.ipynb
Run the second cell to load in the ALPR data
Run the third cell to create the projection of the ALPRs
Projection variables:
\‾‾‾|‾‾‾/ |\ | /| | \_|_/ | _|_ is the angle |__\|/__| __ __ is the base width (m) | / | in the middle is the direction / is the vis range (m)
Run the fourth cell to load in the road data
This uses quite a bit of ram. A 38MB road file would increase ram by about 4GB
Run the fifth cell to determine which ID’s to drop/edit
Adjust the output filename, if desired
Run the last cell to generate the new pbf file
Now we transition to osmandmapcreator. dl link
Download, unzip, and navigate to the folder containing OsmAndMapCreator.jar
Run java -jar -Xms1G -Xmx6G OsmAndMapCreator.jar
The -Xmx6G sets the maximum RAM amount to 6GB (it will use more RAM than needed if you set this too high)
6GB should be enough for most use cases
The file will be output to the “specified working directory”
Which is likely ~/osmand/
Select the output file from big-b-router.ipynb and wait for it to process (takes a while)
Once complete move/copy the .obf file to your phone
Within the osmand app import the obf file and you now have offline anti-ALPR routing.
Benefits of using Osmand:
- cross platform (ios & android)
- android auto/carplay (in the paid version)
- course correction/re-routing
- turn-by-turn directions
- deep ui customization
- routing customization
- plugins
- privacy respecting (downloadable from F-droid)
- open source!
Downsides of Osmand:
- lack of traffic data (not compatible with privacy respecting)
- too many customization options is intimidating
Check out the BC (Bad Cams) articles to see how to OSM data can be improved.