A

磁吸式

A

載質量1t（含）以下，用于城市配送車輛

B

頂檐支撐式

B1

載質量2t（含）以下

B2

載質量2t-15t（含）

B3

載質量15t以上

C

金屬托架式

CⅠa

帶導流罩 載質量2t（含）以下

CⅡa

帶導流罩 載質量2t-15t（含）

CⅢa

帶導流罩 載質量15t以上

金屬托架式按底平面魚標志燈基準面的夾角分為三種，分別為30°、45°、60°

A

Magnetic attraction

A

 Automobiles used for urban goods distributing wiht the load of 1t (including 1t below)

B

Root structured

B1

 The load of 2t (including 2t below)

B2

 The load of 2t-15t (including 15t)

B3

 The load of over 15t

C

Metal moving brideg

CⅠa

 With streamlined dome.The load of 2t (including 2t below)

CⅡa

 With streamlined dome.The load of 2t-15t (including 15t)

CⅢa

 With streamlined dome.The load of over 15t

Metal moving birdge style can be divided 3 kinds,i.e.30°、45°、60°，according to the angle
between the bottom plane and the signal datum plane.