R46 《间接视野》法规提案：“方向盘”放中间，这能通过？

从 UNECE 1 月 6 日发表内容上了解到，OICA 专家提交了 R46 修正提案，提案主要内容是介绍适用于 “centre-steered vehicles” 的 M2、M3、N2、M3 类车辆的规定。涉及概念补充、视野、视镜以及放大系数要求四个方面：

1. 增加 3 条（12.7-12.9）介绍：中心转向车辆、中心驾驶位置和侧面转向车辆。

"12.7. "Centre-steered vehicle" means a vehicle that is steered from a central driving position."

12.8. "Central driving position" is defined when Y coordinate of the "R" point1 is in Y0 position within ±60 mm.

12.9. "Side-steered vehicle" means a vehicle which is not a centre-steered vehicle." 

2. 修改 15.2.4 规定：N2、N3 V级视图增加中心转向车辆的描述

For centre-steered vehicles(see paragraphs 15.2.2.7. and 15.2.4.5.5.) on both sides

3. 修改 15.2.4.6.1 规定：区分侧面转向车辆及中心转向车辆视野

The field of vision shall be such that the driver can see at least a flat horizontal portion of the road, which is for centre-steered vehicles bounded by:

(f)  A transverse vertical plane through the outermost point of the front of the vehicle;

(g)  A transverse vertical plane 2,000 mm in front of the plane defined in (a);

(h)  A longitudinal vertical plane parallel to the longitudinal vertical median plane 2,000 mm outside the outermost side of both sides of the vehicle; and

(i) The front of this field of vision on both sides may be rounded off with a radius of 2,000 mm (see Figure 9.2).

4. 修改 16.1.3.1 规定：区分侧面转向车辆及中心转向放大系数

Insert new paragraphs 16.1.3.1.1. and 16.1.3.1.2., to read:

"16.1.3.1.1.   Magnification factor for side-steered vehicles. The minimum and the average magnification factors of CMS, in both horizontal and vertical directions shall not be lower than the minimum average magnification factor indicated below.

The minimum magnification factor shall not be less than:

(a)  For Class I: 0.31;

(b)  For Class II (driver's side): 0.26;

(c) For Class III (driver's side): 0.29;

(d)  For Class IV (driver's side): 0.054;

(e)  For Class II (passenger's side): 0.13;

(f)  For Class III (passenger's side): 0.19;

(g)  For Class IV (passenger's side): 0.016.

The average magnification factor shall not be less than:

(h) For Class I: 0.33;

(i)  For Class II (driver's side): 0.31;

(j)  For Class III (driver's side): 0.31;

(k)  For Class IV (driver's side): 0.091;

(l)  For Class II (passenger's side): 0.16;

(m)  For Class III (passenger's side): 0.20;

(n)  For Class IV (passenger's side): 0.046."

Insert a new paragraph 16.1.3.1.2., to read:

"16.1.3.1.2.   Magnification factor for centre-steered vehicles of categories M2, M3, N2 and N3.  The minimum and the average magnification factors of the CMS, in both horizontal and vertical directions shall not be lower than the minimum average magnification factor indicated below. The minimum magnification factor shall not be less than:

(a) For Class II (driver center): 0.22;

(b)  For Class IV (driver center): 0.043.

The average magnification factor shall not be less than:

(c)  For Class II (driver center): 0.23;

(d) For Class IV (driver center): 0.068."

其实对于方向盘放于中间的车型也是有的，比如：迈凯伦 F1、法拉利 365 PBerlinetta Speciale。还有一个车型也是中间驾驶车辆，联想 SEV，之前有报道称，美团、新石器等在 SEV 基础上开发无人配送车以及巡逻车。

无论是左舱驾驶还是右舱驾驶，刚需是减少驾驶员视野盲区，希望增大两车相遇时的视野。而对于赛车基本采用中间座椅，这是因为赛道较为空旷，将驾驶座设计在中间时，对车身控制更简单、而且视野更开阔。

然，城市路况/工况十分复杂，如果在中间驾驶，司机视野会被前车大幅遮挡，在变道超车时更为明显。另外，中间转向车辆的舱内座位便会减少，对于大众来说性价比和实用性降低。

不过目前也只是提案，最后能不能通过，拭目以待吧~

以下为 R46 法规修正草案内容：

文章转载自公众号：ADS智库