diff --git a/include/util/packed_vector.hpp b/include/util/packed_vector.hpp
index 885b5fd70..d6c28e68d 100644
--- a/include/util/packed_vector.hpp
+++ b/include/util/packed_vector.hpp
@@ -25,7 +25,7 @@ class PackedVector
   public:
     PackedVector() = default;
 
-    void insert(OSMNodeID incoming_node_id)
+    void push_back(OSMNodeID incoming_node_id)
     {
         std::uint64_t node_id = static_cast<std::uint64_t>(incoming_node_id);
         // mask incoming values, just in case they are > bitsize
@@ -61,7 +61,7 @@ class PackedVector
         num_elements++;
     }
 
-    OSMNodeID retrieve(const std::size_t &a_index) const
+    OSMNodeID at(const std::size_t &a_index) const
     {
         BOOST_ASSERT(a_index < num_elements);
 
@@ -102,6 +102,21 @@ class PackedVector
         }
     }
 
+    std::size_t size() const
+    {
+        return num_elements;
+    }
+
+    void reserve(std::size_t capacity)
+    {
+        vec.reserve(ceil(float(capacity) / ELEMSIZE) * BITSIZE);
+    }
+
+    std::size_t capacity() const
+    {
+        return floor(float(vec.capacity()) / BITSIZE) * ELEMSIZE;
+    }
+
   private:
     std::vector<std::uint64_t> vec;
     std::size_t num_elements = 0;
diff --git a/unit_tests/util/packed_vector.cpp b/unit_tests/util/packed_vector.cpp
index e8490c5b4..9995c7be0 100644
--- a/unit_tests/util/packed_vector.cpp
+++ b/unit_tests/util/packed_vector.cpp
@@ -21,14 +21,27 @@ BOOST_AUTO_TEST_CASE(insert_and_retrieve_packed_test)
     {
         OSMNodeID r = static_cast<OSMNodeID>(rand() % 2147483647); // max 33-bit uint
 
-        packed_ids.insert(r);
+        packed_ids.push_back(r);
         original_ids.push_back(r);
     }
 
     for (std::size_t i = 0; i < num_test_cases; i++)
     {
-        BOOST_CHECK_EQUAL(original_ids.at(i), packed_ids.retrieve(i));
+        BOOST_CHECK_EQUAL(original_ids.at(i), packed_ids.at(i));
     }
 }
 
+BOOST_AUTO_TEST_CASE(packed_vector_capacity_test)
+{
+    PackedVector packed_vec;
+    const std::size_t original_size = packed_vec.capacity();
+    std::vector<OSMNodeID> dummy_vec;
+
+    BOOST_CHECK_EQUAL(original_size, dummy_vec.capacity());
+
+    packed_vec.reserve(100);
+
+    BOOST_CHECK(packed_vec.capacity() >= 100);
+}
+
 BOOST_AUTO_TEST_SUITE_END()