diff --git a/data/ddl/07_transport_types.sql b/data/ddl/07_transport_types.sql
new file mode 100644
index 0000000..7974d5d
--- /dev/null
+++ b/data/ddl/07_transport_types.sql
@@ -0,0 +1,16 @@
+CREATE TABLE IF NOT EXISTS `transport_types` (
+    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `name` VARCHAR(100) NOT NULL UNIQUE,
+    `descriptor` VARCHAR(100) NOT NULL UNIQUE,
+    `glyphUrl` VARCHAR(2048),
+    `createdAt` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    PRIMARY KEY (`id`)
+);
+
+INSERT IGNORE INTO `transport_types` (name, descriptor, glyphUrl) VALUES
+    ('Bus', 'bus', "https://upload.wikimedia.org/wikipedia/commons/4/46/Paris_Bus_icon.svg"),
+    ('Métro', 'metro', "https://upload.wikimedia.org/wikipedia/commons/5/5e/Metro-M.svg"),
+    ('RER', 'rer', "https://upload.wikimedia.org/wikipedia/commons/1/13/RER.svg"),
+    ('Transilien', 'transilien', "https://upload.wikimedia.org/wikipedia/fr/f/f3/Logo_Transilien_%28RATP%29.svg"),
+    ('Trains TER', 'tertrain', "https://upload.wikimedia.org/wikipedia/commons/9/98/Logo_TER.svg");
\ No newline at end of file
diff --git a/data/ddl/08_lines.sql b/data/ddl/08_lines.sql
new file mode 100644
index 0000000..dca6388
--- /dev/null
+++ b/data/ddl/08_lines.sql
@@ -0,0 +1,17 @@
+CREATE TABLE IF NOT EXISTS `lines` (
+    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `code` VARCHAR(50) NOT NULL UNIQUE,
+    `name` VARCHAR(255),
+    `textColorHex` VARCHAR(7),
+    `backColorHex` VARCHAR(7),
+    `transportTypeId` INT UNSIGNED NOT NULL,
+    `createdAt` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    PRIMARY KEY (`id`),
+
+    CONSTRAINT `fk_lines_transport_type`
+        FOREIGN KEY (`transportTypeId`)
+        REFERENCES `transport_types` (`id`),
+
+    INDEX `idx_transport_type` (`transportTypeId`)
+);
\ No newline at end of file
diff --git a/data/ddl/09_stations.sql b/data/ddl/09_stations.sql
new file mode 100644
index 0000000..e19ce15
--- /dev/null
+++ b/data/ddl/09_stations.sql
@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS `stations` (
+    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `name` VARCHAR(255) NOT NULL,
+    `description` TEXT NULL,
+    `createdAt` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    PRIMARY KEY (id),
+    INDEX idx_stations_name (name)
+);
\ No newline at end of file
diff --git a/data/ddl/10_platforms.sql b/data/ddl/10_platforms.sql
new file mode 100644
index 0000000..5a263fd
--- /dev/null
+++ b/data/ddl/10_platforms.sql
@@ -0,0 +1,22 @@
+CREATE TABLE IF NOT EXISTS `platforms` (
+    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `stationId` INT UNSIGNED NOT NULL,
+    `name` VARCHAR(255) NULL,
+    `direction` VARCHAR(255) NULL,
+    `latitude` DECIMAL(10, 8) NOT NULL,
+    `longitude` DECIMAL(11, 8) NOT NULL,
+    `location` POINT NOT NULL,
+    `isPRM` BOOLEAN NOT NULL DEFAULT FALSE,
+    `hasElevator` BOOLEAN NOT NULL DEFAULT FALSE,
+    `createdAt` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    PRIMARY KEY (id),
+    SPATIAL INDEX idx_platforms_location (location),
+    INDEX idx_platforms_station (stationId),
+
+    CONSTRAINT fk_platforms_station FOREIGN KEY (stationId)
+        REFERENCES stations(id) ON DELETE CASCADE,
+
+    CONSTRAINT chk_platforms_latitude CHECK (latitude BETWEEN -90 AND 90),
+    CONSTRAINT chk_platforms_longitude CHECK (longitude BETWEEN -180 AND 180)
+);
\ No newline at end of file
diff --git a/data/ddl/11_platform_lines.sql b/data/ddl/11_platform_lines.sql
new file mode 100644
index 0000000..df01be3
--- /dev/null
+++ b/data/ddl/11_platform_lines.sql
@@ -0,0 +1,17 @@
+CREATE TABLE IF NOT EXISTS `platform_lines` (
+    `id` INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    `platformId` INT UNSIGNED NOT NULL,
+    `lineId` INT UNSIGNED NOT NULL,
+    `directionId` TINYINT UNSIGNED NOT NULL DEFAULT 0,
+    `orderInLine` SMALLINT UNSIGNED NOT NULL,
+
+    PRIMARY KEY (id),
+    UNIQUE KEY uq_platform_line_dir (platformId, lineId, directionId),
+    UNIQUE KEY uq_line_dir_order (lineId, directionId, orderInLine),
+    INDEX idx_pl_line (lineId),
+
+    CONSTRAINT fk_pl_platform FOREIGN KEY (platformId)
+        REFERENCES platforms(id) ON DELETE CASCADE,
+    CONSTRAINT fk_pl_line FOREIGN KEY (lineId)
+        REFERENCES `lines`(id) ON DELETE CASCADE
+);
\ No newline at end of file
diff --git a/data/ddl/12_platforms_trigger.sql b/data/ddl/12_platforms_trigger.sql
new file mode 100644
index 0000000..8bded70
--- /dev/null
+++ b/data/ddl/12_platforms_trigger.sql
@@ -0,0 +1,13 @@
+CREATE TRIGGER IF NOT EXISTS trg_platforms_before_insert
+    BEFORE INSERT ON `platforms`
+        FOR EACH ROW
+            BEGIN
+                SET NEW.location = POINT(NEW.longitude, NEW.latitude);
+        END;
+
+CREATE TRIGGER IF NOT EXISTS trg_platforms_before_update
+    BEFORE UPDATE ON `platforms`
+        FOR EACH ROW
+            BEGIN
+                SET NEW.location = POINT(NEW.longitude, NEW.latitude);
+        END;
\ No newline at end of file
diff --git a/repositories/lineRepo.js b/repositories/lineRepo.js
new file mode 100644
index 0000000..06a5e08
--- /dev/null
+++ b/repositories/lineRepo.js
@@ -0,0 +1,74 @@
+const { pool } = require("../modules/database")
+const { DefaultError } = require("../errors/errors")
+
+async function findAllLines() {
+    try {
+        const sql = "SELECT * FROM \`lines\`"
+        const rows = await pool.query(sql)
+        return rows
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function findLineById(lineId) {
+    try {
+        const sql = "SELECT * FROM \`lines\` WHERE id = ?"
+        const rows = await pool.query(sql, [lineId])
+        return rows[0] || null
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function findLinesByTransportType(transportTypeId) {
+    try {
+        const sql = "SELECT * FROM \`lines\` WHERE transportTypeId = ?"
+        const rows = await pool.query(sql, [transportTypeId])
+        return rows
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function createLine(code, name, textColorHex, backColorHex, transportTypeId) {
+    try {
+        const sql = "INSERT INTO \`lines\` (code, name, textColorHex, backColorHex, transportTypeId) VALUES (?, ?, ?, ?, ?)"
+        const rows = await pool.query(sql, [code, name, textColorHex, backColorHex, transportTypeId])
+        return rows.insertId
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function updateLine(lineId, updateData) {
+    try {
+        const fields = Object.keys(updateData)
+        const values = Object.values(updateData)
+        const setClause = fields.map(f => `${f} = ?`).join(", ")
+        const sql = `UPDATE \`lines\` SET ${setClause} WHERE id = ?`
+        const rows = await pool.query(sql, [...values, lineId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function deleteLine(lineId) {
+    try {
+        const sql = "DELETE FROM \`lines\` WHERE id = ?"
+        const rows = await pool.query(sql, [lineId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+module.exports = {
+    findAllLines,
+    findLineById,
+    findLinesByTransportType,
+    createLine,
+    updateLine,
+    deleteLine
+}
\ No newline at end of file
diff --git a/repositories/platformLineRepo.js b/repositories/platformLineRepo.js
new file mode 100644
index 0000000..76b34f4
--- /dev/null
+++ b/repositories/platformLineRepo.js
@@ -0,0 +1,88 @@
+const { pool } = require("../modules/database")
+const { DefaultError } = require("../errors/errors")
+
+// lignes d'une station (dédupliquées, tous quais confondus)
+async function findLinesByStation(stationId) {
+    try {
+        const sql = `
+            SELECT DISTINCT l.*
+            FROM \`lines\` l
+            JOIN platform_lines pl ON pl.lineId = l.id
+            JOIN platforms p ON p.id = pl.platformId
+            WHERE p.stationId = ?
+        `
+        return await pool.query(sql, [stationId])
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function findLinesByPlatform(platformId) {
+    try {
+        const sql = `
+            SELECT l.*, pl.directionId, pl.orderInLine
+            FROM \`lines\` l
+            JOIN platform_lines pl ON pl.lineId = l.id
+            WHERE pl.platformId = ?
+        `
+        return await pool.query(sql, [platformId])
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+// parcours ordonné d'une ligne dans un sens donné
+async function findStationsByLine(lineId, directionId = 0) {
+    try {
+        const sql = `
+            SELECT s.*, p.id AS platformId, p.name AS platformName, pl.orderInLine
+            FROM stations s
+            JOIN platforms p ON p.stationId = s.id
+            JOIN platform_lines pl ON pl.platformId = p.id
+            WHERE pl.lineId = ? AND pl.directionId = ?
+            ORDER BY pl.orderInLine
+        `
+        return await pool.query(sql, [lineId, directionId])
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function addLineToPlatform(platformId, lineId, directionId, orderInLine) {
+    try {
+        const sql = "INSERT INTO platform_lines (platformId, lineId, directionId, orderInLine) VALUES (?, ?, ?, ?)"
+        const rows = await pool.query(sql, [platformId, lineId, directionId, orderInLine])
+        return rows.insertId
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function removeLineFromPlatform(platformId, lineId, directionId) {
+    try {
+        const sql = "DELETE FROM platform_lines WHERE platformId = ? AND lineId = ? AND directionId = ?"
+        const rows = await pool.query(sql, [platformId, lineId, directionId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function updateOrder(platformLineId, orderInLine) {
+    try {
+        const sql = "UPDATE platform_lines SET orderInLine = ? WHERE id = ?"
+        const rows = await pool.query(sql, [orderInLine, platformLineId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+module.exports = {
+    findLinesByStation,
+    findLinesByPlatform,
+    findStationsByLine,
+    addLineToPlatform,
+    removeLineFromPlatform,
+    updateOrder
+}
\ No newline at end of file
diff --git a/repositories/platformRepo.js b/repositories/platformRepo.js
new file mode 100644
index 0000000..920cb21
--- /dev/null
+++ b/repositories/platformRepo.js
@@ -0,0 +1,85 @@
+const { pool } = require("../modules/database")
+const { DefaultError } = require("../errors/errors")
+
+async function findPlatformsByStation(stationId) {
+    try {
+        const sql = "SELECT * FROM platforms WHERE stationId = ?"
+        return await pool.query(sql, [stationId])
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function findPlatformById(platformId) {
+    try {
+        const sql = "SELECT * FROM platforms WHERE id = ?"
+        const rows = await pool.query(sql, [platformId])
+        return rows[0] || null
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+// cœur de la validation : quai le plus proche desservant CETTE ligne
+async function findNearestPlatformForLine(lineId, latitude, longitude, radiusM) {
+    try {
+        const sql = `
+            SELECT p.*, ST_Distance_Sphere(p.location, ST_SRID(POINT(?, ?), 4326)) AS distance
+            FROM platforms p
+            JOIN platform_lines pl ON pl.platformId = p.id
+            WHERE pl.lineId = ?
+            HAVING distance <= ?
+            ORDER BY distance
+            LIMIT 1
+        `
+        const rows = await pool.query(sql, [longitude, latitude, lineId, radiusM])
+        return rows[0] || null
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function createPlatform(stationId, name, direction, latitude, longitude, isPRM, hasElevator) {
+    try {
+        const sql = `
+            INSERT INTO platforms (stationId, name, direction, latitude, longitude, isPRM, hasElevator)
+            VALUES (?, ?, ?, ?, ?, ?, ?)
+        `
+        const rows = await pool.query(sql, [
+            stationId, name, direction, latitude, longitude,
+            longitude, latitude, isPRM, hasElevator
+        ])
+        return rows.insertId
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function updatePlatformAccessibility(platformId, isPRM, hasElevator) {
+    try {
+        const sql = "UPDATE platforms SET isPRM = ?, hasElevator = ? WHERE id = ?"
+        const rows = await pool.query(sql, [isPRM, hasElevator, platformId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function deletePlatform(platformId) {
+    try {
+        const sql = "DELETE FROM platforms WHERE id = ?"
+        const rows = await pool.query(sql, [platformId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+module.exports = {
+    findPlatformsByStation,
+    findPlatformById,
+    findNearestPlatformForLine,
+    createPlatform,
+    updatePlatformAccessibility,
+    deletePlatform
+}
\ No newline at end of file
diff --git a/repositories/stationRepo.js b/repositories/stationRepo.js
new file mode 100644
index 0000000..0406d58
--- /dev/null
+++ b/repositories/stationRepo.js
@@ -0,0 +1,99 @@
+const { pool } = require("../modules/database")
+const { DefaultError } = require("../errors/errors")
+
+async function findAllStations() {
+    try {
+        const sql = "SELECT * FROM stations"
+        return await pool.query(sql)
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function findStationById(stationId) {
+    try {
+        const sql = "SELECT * FROM stations WHERE id = ?"
+        const rows = await pool.query(sql, [stationId])
+        return rows[0] || null
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+// distance = celle du quai le plus proche
+async function findStationsByDistance(latitude, longitude, radiusKm) {
+    try {
+        const sql = `
+            SELECT s.*, MIN(ST_Distance_Sphere(p.location, ST_SRID(POINT(?, ?), 4326))) / 1000 AS distance
+            FROM stations s
+            JOIN platforms p ON p.stationId = s.id
+            GROUP BY s.id
+            HAVING distance <= ?
+            ORDER BY distance
+        `
+        return await pool.query(sql, [longitude, latitude, radiusKm])
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+// une station est "accessible" si AU MOINS un quai l'est
+async function findAccessibleStations(latitude, longitude, radiusKm) {
+    try {
+        const sql = `
+            SELECT s.*, MIN(ST_Distance_Sphere(p.location, ST_SRID(POINT(?, ?), 4326))) / 1000 AS distance
+            FROM stations s
+            JOIN platforms p ON p.stationId = s.id
+            WHERE p.isPRM = TRUE AND p.hasElevator = TRUE
+            GROUP BY s.id
+            HAVING distance <= ?
+            ORDER BY distance
+        `
+        return await pool.query(sql, [longitude, latitude, radiusKm])
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function createStation(name, description) {
+    try {
+        const sql = "INSERT INTO stations (name, description) VALUES (?, ?)"
+        const rows = await pool.query(sql, [name, description])
+        return rows.insertId
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function updateStation(stationId, updateData) {
+    try {
+        const fields = Object.keys(updateData)
+        const values = Object.values(updateData)
+        const setClause = fields.map(f => `${f} = ?`).join(", ")
+        const sql = `UPDATE stations SET ${setClause} WHERE id = ?`
+        const rows = await pool.query(sql, [...values, stationId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+async function deleteStation(stationId) {
+    try {
+        const sql = "DELETE FROM stations WHERE id = ?"
+        const rows = await pool.query(sql, [stationId])
+        return rows.affectedRows > 0
+    } catch (error) {
+        throw new DefaultError(500, "Internal Server Error", error)
+    }
+}
+
+module.exports = {
+    findAllStations,
+    findStationById,
+    findStationsByDistance,
+    findAccessibleStations,
+    createStation,
+    updateStation,
+    deleteStation
+}
\ No newline at end of file
diff --git a/services/transportService.js b/services/transportService.js
new file mode 100644
index 0000000..69ae972
--- /dev/null
+++ b/services/transportService.js
@@ -0,0 +1,220 @@
+const lineRepo = require("../repositories/lineRepo")
+const stationRepo = require("../repositories/stationRepo")
+const platformRepo = require("../repositories/platformRepo")
+const platformLineRepo = require("../repositories/platformLineRepo")
+
+/* ---------- LINES ---------- */
+
+async function getAllLines() {
+    return await lineRepo.findAllLines()
+}
+
+async function getLineById({ lineId }) {
+    return await lineRepo.findLineById(lineId)
+}
+
+async function getLinesByTransportType({ transportTypeId }) {
+    return await lineRepo.findLinesByTransportType(transportTypeId)
+}
+
+async function createLine({
+    code,
+    name,
+    textColorHex,
+    backColorHex,
+    transportTypeId
+}) {
+    return await lineRepo.createLine(
+        code,
+        name,
+        textColorHex,
+        backColorHex,
+        transportTypeId
+    )
+}
+
+async function updateLine({ lineId, updateData }) {
+    return await lineRepo.updateLine(lineId, updateData)
+}
+
+async function deleteLine({ lineId }) {
+    return await lineRepo.deleteLine(lineId)
+}
+
+/* ---------- STATIONS ---------- */
+
+async function getAllStations() {
+    return await stationRepo.findAllStations()
+}
+
+async function getStationById({ stationId }) {
+    return await stationRepo.findStationById(stationId)
+}
+
+async function getStationsByDistance({ latitude, longitude, radiusKm }) {
+    return await stationRepo.findStationsByDistance(
+        latitude,
+        longitude,
+        radiusKm
+    )
+}
+
+async function getAccessibleStations({ latitude, longitude, radiusKm }) {
+    return await stationRepo.findAccessibleStations(
+        latitude,
+        longitude,
+        radiusKm
+    )
+}
+
+async function createStation({ name, description }) {
+    return await stationRepo.createStation(name, description)
+}
+
+async function updateStation({ stationId, updateData }) {
+    return await stationRepo.updateStation(stationId, updateData)
+}
+
+async function deleteStation({ stationId }) {
+    return await stationRepo.deleteStation(stationId)
+}
+
+/* ---------- PLATFORMS ---------- */
+
+async function getPlatformsByStation({ stationId }) {
+    return await platformRepo.findPlatformsByStation(stationId)
+}
+
+async function getPlatformById({ platformId }) {
+    return await platformRepo.findPlatformById(platformId)
+}
+
+async function createPlatform({
+    stationId,
+    name,
+    direction,
+    latitude,
+    longitude,
+    isPRM = false,
+    hasElevator = false
+}) {
+    return await platformRepo.createPlatform(
+        stationId,
+        name,
+        direction,
+        latitude,
+        longitude,
+        isPRM,
+        hasElevator
+    )
+}
+
+async function updatePlatformAccessibility({
+    platformId,
+    isPRM,
+    hasElevator
+}) {
+    return await platformRepo.updatePlatformAccessibility(
+        platformId,
+        isPRM,
+        hasElevator
+    )
+}
+
+async function deletePlatform({ platformId }) {
+    return await platformRepo.deletePlatform(platformId)
+}
+
+/* ---------- PLATFORM <-> LINES ---------- */
+
+async function getStationLines({ stationId }) {
+    return await platformLineRepo.findLinesByStation(stationId)
+}
+
+async function getPlatformLines({ platformId }) {
+    return await platformLineRepo.findLinesByPlatform(platformId)
+}
+
+async function getLineStations({ lineId, directionId = 0 }) {
+    return await platformLineRepo.findStationsByLine(lineId, directionId)
+}
+
+async function addLineToPlatform({
+    platformId,
+    lineId,
+    directionId = 0,
+    orderInLine
+}) {
+    return await platformLineRepo.addLineToPlatform(
+        platformId,
+        lineId,
+        directionId,
+        orderInLine
+    )
+}
+
+async function removeLineFromPlatform({
+    platformId,
+    lineId,
+    directionId = 0
+}) {
+    return await platformLineRepo.removeLineFromPlatform(
+        platformId,
+        lineId,
+        directionId
+    )
+}
+
+async function updatePlatformLineOrder({ platformLineId, orderInLine }) {
+    return await platformLineRepo.updateOrder(platformLineId, orderInLine)
+}
+
+/* ---------- VALIDATION ---------- */
+
+const DEFAULT_RADIUS_M = 100
+
+async function findNearestPlatformForLine({
+    lineId,
+    latitude,
+    longitude,
+    radiusM = DEFAULT_RADIUS_M
+}) {
+    return await platformRepo.findNearestPlatformForLine(
+        lineId,
+        latitude,
+        longitude,
+        radiusM
+    )
+}
+
+module.exports = {
+    getAllLines,
+    getLineById,
+    getLinesByTransportType,
+    createLine,
+    updateLine,
+    deleteLine,
+
+    getAllStations,
+    getStationById,
+    getStationsByDistance,
+    getAccessibleStations,
+    createStation,
+    updateStation,
+    deleteStation,
+
+    getPlatformsByStation,
+    getPlatformById,
+    createPlatform,
+    updatePlatformAccessibility,
+    deletePlatform,
+
+    getStationLines,
+    getPlatformLines,
+    getLineStations,
+    addLineToPlatform,
+    removeLineFromPlatform,
+    updatePlatformLineOrder,
+
+    findNearestPlatformForLine
+}
\ No newline at end of file