法令原文：
中国：《中华人民共和国道路交通安全法实施条例》2004年5月1日
第五十一条 机动车通过有交通信号灯控制的交叉路口，应当按照下列规定通行：
- 在划有导向车道的路口，按所需行进方向驶入导向车道；
- 准备进入环形路口的让已在路口内的机动车先行；
- 向左转弯时，靠路口中心点左侧转弯。转弯时开启转向灯，夜间行驶开启近光灯；
- 遇放行信号时，依次通过；
- 遇停止信号时，依次停在停止线以外。没有停止线的，停在路口以外；
- 向右转弯遇有同车道前车正在等候放行信号时，依次停车等候；
- 在没有方向指示信号灯的交叉路口，转弯的机动车让直行的车辆、行人先行。相对方向行驶的右转弯机动车让左转弯车辆先行。
第五十二条 机动车通过没有交通信号灯控制也没有交通警察指挥的交叉路口，除应当遵守第五十一条第（二）项、第（三）项的规定外，还应当遵守下列规定：
- 有交通标志、标线控制的，让优先通行的一方先行；
- 没有交通标志、标线控制的，在进入路口前停车瞭望，让右方道路的来车先行；
- 转弯的机动车让直行的车辆先行；
- 相对方向行驶的右转弯的机动车让左转弯的车辆先行。
加拿大（以安省为例）：Highway Traffic Act, R.S.O. 1990, c. H.8
Turning at intersections
141. (1) In this section,
“centre line” means,
(a) in the case of a highway on which traffic is permitted to move in opposing directions, the marked line or median that divides traffic moving in opposing directions on the highway or, where there is no marked line or median, the centre of the roadway, and
(b) in the case of a highway designated for the use of one-way traffic, the left curb or edge of the roadway. R.S.O. 1990, c. H.8, s. 141 (1).
Right turn at intersection
(2) Where a driver or operator of a vehicle intends to turn to the right into an intersecting highway, he or she shall, where the highway on which he or she is driving has marked lanes for traffic, approach the intersection within the right-hand lane or, where it has no such marked lanes, by keeping immediately to the left of the right curb or edge of the roadway and he or she shall make the right turn by entering the right-hand lane of the intersecting highway where the lane is marked or, where no such lane is marked, by keeping immediately to the left of the right curb or edge of the roadway being entered. R.S.O. 1990, c. H.8, s. 141 (2).
Right turn, where multiple lanes
(3) Despite subsection (2), where more than one lane of a highway has been designated as a right-turn lane, the driver or operator of a vehicle intending to turn to the right into an intersecting highway shall approach the intersection in one of the lanes and leave the intersection in the lane of the intersecting highway that corresponds to the lane from which the turn was commenced. R.S.O. 1990, c. H.8, s. 141 (3).
Exception
(4) A driver of a road service vehicle entering an intersection within a lane other than one described in subsection (2) or (3) may make a right turn from the approach lane if the turn can be safely made. R.S.O. 1990, c. H.8, s. 141 (4).
Left turn, across path of approaching vehicle
(5) No driver or operator of a vehicle in an intersection shall turn left across the path of a vehicle approaching from the opposite direction unless he or she has afforded a reasonable opportunity to the driver or operator of the approaching vehicle to avoid a collision. R.S.O. 1990, c. H.8, s. 141 (5).
Left turn, at intersection
(6) Where a driver or operator of a vehicle intends to turn to the left into an intersecting highway, he or she shall, where the highway on which he or she is driving has marked lanes for traffic, approach the intersection within the left-hand lane provided for the use of traffic moving in the direction in which his or her vehicle is proceeding or, where it has no such marked lanes, by keeping immediately to the right of the centre line of the highway and he or she shall make the left turn by entering the intersection to the right of the centre line or its extension and by leaving the intersection in the left-hand lane provided for the use of traffic moving in the direction in which his or her vehicle is proceeding where the lane is marked or, where no such lane is marked, by passing immediately to the right of the centre line of the intersecting highway. R.S.O. 1990, c. H.8, s. 141 (6).
Left turn, where multiple lanes
(7) Despite subsection (6), where more than one lane of a highway has been designated as a left-turn lane, the driver or operator of a vehicle intending to turn to the left into an intersecting highway shall approach the intersection in one of the lanes and leave the intersection in the lane of the intersecting highway that corresponds to the lane from which the turn was commenced. R.S.O. 1990, c. H.8, s. 141 (7).
Exception
(8) A driver of a road service vehicle entering an intersection within a left-turn lane may leave the intersection without turning to the left if the movement can be safely made. R.S.O. 1990, c. H.8, s. 141 (8).
Long vehicles
(9) Where, because of the length of a vehicle or combination of vehicles, a turn cannot be made within the confines of the lanes referred to in subsection (2), (3), (6) or (7), a driver, when making such a turn, is not in contravention of any such subsection if he or she complies with the applicable provision as closely as practicable. R.S.O. 1990, c. H.8, s. 141 (9).
看路况，红绿灯决定
？当时是绿灯我右转，对面有一左转的，刚好我们转入的路只有一条车道，我当时没有出于礼貌让道于左转车，然后那车就在我后面响了我几声喇叭。这让我也很疑惑到底那个更有优先权呢？很感谢LZ这个帖子，让我解了惑。
