Avoid Sharp turns and U-turns

Products Used: Directions API & Navigation API


NextBillion.ai’s routing APIs provide a powerful “avoid” parameter to configure routes to suit different business requirements of fleet management. Users can leverage the available options to avoid routing through highways, tolls, service roads and dangerous u-turns or sharp_turns. These features provide a high-degree of flexibility to serve the routing constraints of different vehicles as well as meet business requirements.

We will take a look at a couple of examples to see their impact on the suggested routes.

Avoid U turns

In this example, we will request a directions using the Directions API with

  • An “origin” and “destination” for the pick-up van trip
  • “mode” option set to “car”
  • “avoid” configuration set to “uturn”

Directions API request

1curl --location 'https://api.nextbillion.io/directions/json?origin=38.83377917,-77.11917420&destination=38.83397747,-77.11895667&mode=car&key=<your_api_key>&option=flexible&avoid=uturn'

Directions API response

1{
2    "status": "Ok",
3    "routes": [
4        {
5            "geometry": "gv_lFziuuMAMIiAKkAE_AC]Cq@Ig@I]??CKGUGS??CK??EKM]Wk@??KUCECGKSQ[MWMQQU\\CT?BRBJJT@?VG`BILEHEHGpDcD??LTHRN`@??BH??KJq@r@YX[Z??k@j@]Z??OPc@`@A?ML??UPQLMH?@KJIF??BJFR??FT@HFRBTDRBNBR?BBX?@Db@@BCXBb@HrA",
6            "distance": 1043.755,
7            "duration": 202.879,
8            "start_location": {
9                "latitude": 38.83379,
10                "longitude": -77.11918
11            },
12            "end_location": {
13                "latitude": 38.83397,
14                "longitude": -77.11896
15            },
16            "legs": [
17                {
18                    "distance": {

Notice that if the avoid option is removed from the input request the route suggested is quite different and does go through a highway.

Avoid service roads

In this example, we will request step-by-step instructions using the Navigation API to generate a route suitable for a freight truck by avoiding any sharp turns and u-turns. We specify:

  • An “origin” and “destination”
  • “mode” option set to “truck”
  • “avoid” configuration set to “sharp_turn” and “uturn”
1curl --location 'https://api.nextbillion.io/navigation/json?origin=33.3220362,-117.2358124&destination=33.329168,-117.24246&mode=truck&key=<your_api_key>&option=flexible&avoid=service_road'
1{
2  "status": "Ok",
3  "routes": [
4    {
5      "geometry": "gbyp~@feor~EaDH}DQiDYaDk@aDeA_HwCiN}G{@c@qKcFiRgJmEaCgA{@_@a@S_@KaBwI\\cKn@gALqDb@E@wA`@sA\\C@uA\\uDlAkEfByFxBq^nOqDxAgDhAiOtE_L|CmDx@eJbBwHbAuBVgANaEf@{@JaD^qANgEXwEXqM`@sNL}B?cJ?aUGmJQoKQqLQkSX_UhA{ANyD^E?_JnAmEj@uT`CwT|BoLl@oHPsIHeHKaEMkFUaF[aFe@C?kEi@gC[kEu@qFkAkIuBgHoBcKmCwFoA}GgAoGo@eAKwG]gCIeBCkCDyBPsD^yCd@cAJmGhAwBj@A?sDz@iFpAA?aDbAkA\\C@sHvBgOnEkHjBIBwxAn_@??oF|AE@u_@tKyKpCC@mQrE{Cz@kItBmKdDeLnE{IbEs[`Su_@hTqJvEqPlGA?uRpGeXjHiWvHyDdAmPbFiSfG_KfDA?gWpIA?{ChAcF|BaFnCcElCqEfD{NvK}BhBED}BhBqHzG}A~AA@uO`OkMfKkDfCA@yErC}K`GyCtAwAj@sEhB{FfBeKrCkEhAcR`EaNrC}EbAqE~@{J~BC@oG|Ac@JuGtBwBp@kHlCGBoD`BqHhDuKtGCB}HbEoAn@aFCe@RcCbBaGbEA@so@ra@iTlMcd@bXA@~BhF?@hB`DbA`B`GzG??pBzAdA~@tDxCFDvAz@pXdP|SrM@@p@`@jE`B`GhAfHp@jFJvEYtFo@lL_D`Bc@v_@aPzDcAtCm@lJUrFJhI`@`M`AfNfCfNTlLfAbEj@pDz@|CdAB@rG~DnEbDrFbClGtAvE^dG?nBB@?fAE??|MgBDAlBi@|WoJnX{JjDu@xCKtDTfC^jBv@xRzL~DlCtB~@`B`@??~Bh@jHj@v]v@B?dY?hF?B?jkAU@?d^IdS[B?nLG??lu@c@F?vy@v@da@`@`@?|KGhG[zC[jH_BzKaErToK`EuBbJsCzUaDjGVvDp@dEjBDBx[hVtHxDdEvAFB`d@@lVk@zC?rD?D?fsBCD?^md@s@om@?AiAwbA",
6      "distance": 5579,
7      "duration": 537.015,
8      "start_location": {
9        "latitude": 33.322036,
10        "longitude": -117.235812
11      },
12      "end_location": {
13        "latitude": 33.329168,
14        "longitude": -117.24246
15      },
16      "legs": [
17        {
18          "distance": {

Visit product documentation (Directions API | Navigation API) to know more about the available features.

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